Knock Knock Costa
- Knock Knock
- Who's there?
- Costa
- Costa who?
- Costa lot!
Random joke from this category
- Knock Knock
- Who's there?
- Costa
- Costa who?
- Costa lot!
- Knock Knock
- Who's there?
- Cosi
- Cosi who?
- Cosi has to!
- Knock Knock
- Who's there?
- Cork
- Cork who?
- Cork and beans!
- Knock Knock
- Who's there?
- Cook
- Cook who?
- Cuckoo yourself, I don't come here to be insulted!
- Knock Knock
- Who's there?
- Conga
- Conga who?
- Conga go on meeting like this!
- Knock Knock
- Who's there?
- Con
- Con who?
- Con unhinged!
- Knock Knock
- Who's there?
- Cookie
- Cookie who?
- Cookie quit and now I have to make all the food!
- Knock Knock
- Who's there?
- Comic
- Comic who?
- Comic and see me sometime!
- Knock Knock
- Who's there?
- Cologne
- Cologne who?
- Cologne me names won't help!
- Knock Knock
- Who's there?
- Colin
- Colin who?
- Colin all cars, Colin all cars!