KnockKnock.fun
Knock Knock
Who's there?
Banana
Banana who?
Knock knock
Who's there?
Banana
Banana who?
Knock knock
Who's there?
Banana
Banana who?
Knock knock
Who's there?
Orange
Orange who?
Orange you glad I didn't say banana
After saying "banana" so many times, "orange you glad..." sounds a bit like "aren't you glad...".