knock up Verb
1. Also: (knock together) Informal to make or assemble quickly: my boyfriend can knock up a wonderful lasagne
2. Brit informal to waken: to knock someone up early
3. Slang to make pregnant
4. to practise before a game of tennis, squash, or Badminton
Noun
knock-up
a practice session at tennis, squash, or badminton
A warm up or short training session.
Tennis
Tennis
To make them pregnant.
Its before the match starts 'for real'. Players 'knocking' the ball back to each other for warm-up / practice.
Knock knock. Who's there? Up up. Up up who? Up up and away. Here is another one for you. Knock knock. Who's there? Canoe. Canoe who? Canoe tell me another knock knock joke?
knock knock, whose there "FBI OPEN UP" "fbi open up" who? OH WAIT RUNNNNNN
Knock on wood means you are hoping that it happens.
It means knock, knock!
knock each other out
Knock on wood means you are hoping that it happens.
Knock out!