Nil Alexandrov:
This [off the bat] expression comes from the baseball
and this is a fixed expression means immediately. The
bat is the stick you play with.
I should say Covid and Batman were off the bat, though.
There are couple of more baseball terminology is used
daily, like let*s touch base (tomorrow and discuss
that), (the value is) in the ballpark, etc.
That reminds me of the immortal number by Abbot&Costello,
"Who's on first?" (I have the script handy) --
A: Alright, now whaddya want?
C: Now look,  I'm the  head  of  the  sports
   department. I  gotta  know  the  baseball
   players' names.
   Do you know the guys' names?
A: Oh sure.
C: So you go ahead and tell me some of their
   names.
A: Well, I'll introduce you to the boys. You
   know   sometimes   nowadays   they   give
   ballplayers peculiar names.
C: You mean funny names.
A: Nicknames, pet names, like Dizzy Dean --
C: His brother Daffy --
A: Daffy Dean --
C: And their cousin!
A: Who's that?
C: Goofy!
A: Goofy, huh? Now let's see. We have on the
   bags -  we have Who's on first, What's on
   second, I Don't Know's on third.
C: That's what I wanna find out.
A: I say Who's on first, What's on second, I
   Don't Know's on third --
C: You know the fellows' names?
A: Certainly!
C: Well then who's on first?
A: Yes!
C: I mean the fellow's name!
A: Who!
C: The guy on first!
A: Who!
C: The first baseman!
A: Who!
C: The guy playing first!
A: Who is on first!
C: Now whaddya askin' me for?
A: I'm telling you Who is on first.
C: Well, I'm asking YOU who's on first!
A: That's the man's name.
C: That's who's name?
A: Yes.
C: Well go ahead and tell me.
A: Who.
C: The guy on first.
A: Who!
C: The first baseman.
A: Who is on first!
C: Have you  got a  contract with  the first
   baseman?
A: Absolutely.
C: Who signs the contract?
A: Well, naturally!
C: When you  pay off the first baseman every
   month, who gets the money?
A: Every dollar. Why not? The man's entitled
   to it.
C: Who is?
A: Yes. Sometimes  his wife  comes down  and
   collects it.
C: Who's wife?
A: Yes.
C: All I'm  tryin' to find out is what's the
   guy's name on first base.
A: Oh, no -- wait a minute, don't switch 'em
   around. What is on second base.
C: I'm not askin' you who's on second.
A: Who is on first.
C: I don't know.
A: He's on  third -- now we're  not  talkin'
   'bout him.
C: Now, how did I get on third base?
A: You mentioned his name!
C: If I  mentioned the third baseman's name,
   who did I say is playing third?
A: No - Who's playing first.
C: Never mind  first -  I wanna  know what's
   the guy's name on third.
A: No - What's on second.
C: I'm not askin' you who's on second.
A: Who's on first.
C: I don't know.
A: He's on third.
C: Aaah! Would you please stay on third base
   and don't go off it?
A: What was it you wanted?
C: Now who's playin' third base?
A: Now why  do you  insist on putting Who on
   third base?
C: Why? Who am I putting over there?
A: Yes. But we don't want him there.
C: What's the guy's name on third base?
A: What belongs on second.
C: I'm not askin' you who's on second.
A: Who's on first.
C: I don't know.
A&C: THIRD BASE!
C: You got an outfield?
A: Oh yes!
C: The left fielder's name?
A: Why.
C: I don't know, I just thought I'd ask you.
A: Well, I just thought I'd tell you.
C: Alright, then  tell me who's playin' left
   field.
A: Who is playing fir--
C: STAY OUTTA  THE  INFIELD!  I  wanna  know
   what's the left fielder's name.
A: What's on second.
C: I'm not askin' you who's on second.
A: Who's on first.
C: I don't know.
A: C:       THIRD BASE!
C: The left fielder's name?
A: Why.
C: Because!
A: Oh, he's center field.
C: Look, you gotta pitcher on this team?
A: Now wouldn't  this be a fine team without
   a pitcher.
C: The pitcher's name.
A: Tomorrow.
C: You don't wanna tell me today?
A: I'm tellin' you now.
C: Then go ahead.
A: Tomorrow.
C: What time?
A: What time what?
C: What time  tomorrow are you going to tell
   me who's pitching?
A: Now listen.  Who is  not pitching. Who is
   on fir--
C: I'll break  your arm  if you say Who's on
   first. I  wanna know what's the pitcher's
   name.
A: What's on second.
C: I don't know.
A: THIRD BASE!
C: You got a catcher?
A: Oh, absolutely.
C: The catcher's name.
A: Today.
C: Today. And Tomorrow's pitching.
A: Now you've got it.
C: All we've  got is a couple of days on the
   team.
A: Well, I can't help that.
C: Well, I'm a catcher too.
A: I know that.
C: Now suppose that I'm catching, Tomorrow's
   pitching  on  my  team  and  their  heavy
   hitter gets up.
A: Yes.
C: Tomorrow  throws  the  ball.  The  batter
   bunts the  ball. When  he bunts the ball,
   me being  a good  catcher, I  wanna throw
   the guy out at first base. So I pick up the
   ball and throw it to who?
A: Now that's  the first  thing you've said
   right.
C: I don't even know what I'm talkin' about!
A: Well, that's all you have to do.
C: Is to throw the ball to first base.
A: Yes.
C: Now who's got it?
A: Naturally!
C: If  I  throw  the  ball  to  first  base,
   somebody's gotta catch it. Now who caught
   it?
A: Naturally!
C: Who caught it?
A: Naturally.
C: Who?
A: Naturally!
C: Naturally.
A: Yes.
C: So I  pick up  the ball and I throw it to
    Naturally.
A: NO, NO,  NO! You  throw the ball to first
   base and Who gets it?
C: Naturally.
A: That's right. There we go.
C: So I  pick up  the ball and I throw it to
   Naturally.
A: You don't!
C: I throw it to who?
A: Naturally.
C: THAT'S WHAT I'M SAYING!
A: You're not saying it that way.
C: I said I throw the ball to Naturally.
A: You don't - you throw the ball to Who?
C: Naturally!
A: Well, say that!
C: THAT'S WHAT  I'M SAYING! I throw the ball
   to who?
A: Naturally.
C: Ask me.
A: You throw the ball to Who?
C: Naturally.
A: That's it.
C: SAME AS  YOU!! I  throw the ball to first
   base and who gets it?
A: Naturally!
C: Who has it?
A: Naturally!
C: HE BETTER  HAVE IT!  I throw  the ball to
   first base. Whoever it is grabs the ball,
   so the  guy runs  to second. Who picks up
   the ball  and throws  it  to  What,  What
   throws it  to I  Don't Know, I Don't Know
   throws it back to Tomorrow -- triple play.
A: Yes.
C: Another guy  gets up -- it's  a long  fly
   ball to  Because. Why? I don't know. He's
   on third and I don't give a darn!
A: What was that?
C: I said I don't give a darn!
A: Oh, that's our shortstop.
Litsten and watch also:
-- 
http://www.archive.org/download/otr_abbottandcostello/Abbott_and_Costello_-_Whos_On_First_Original_30_Min_Live_Rad.mp3
-- 
http://www.youtube.com/watch?v=sShMA85pv8M
--- 
 * Origin: nntp://news.fidonet.fi (2:221/6.0)