Knock Knock
Who's there?
Ketchup!
Ketchup who?
Ketchup the tree again!

Knock Knock
Who's there?
Kevin!
Kevin who?
Kevin we go out and play?
!

Knock Knock
Who's there?
Khomeini!
Khomeini who?
Khomeini old time for dinner!

Knock Knock
Who's there?
Kim!
Kim who?
Kim too late!

Knock Knock
Who's there?
Kipper!
Kipper who?
Kipper hands to yourself!