"Knock, knock. – Who’s there?"
Christmas version
1) A: Knock, knock. – Who’s there?
B: Fiona.
A: Fiona who?
B: Fiona had some money, I could buy you a Christmas present.
2) A: Knock, knock. – Who’s there?
B: Noise.
A: Noise who?
B: Noise to see a full stocking on Christmas morning.
3) A: Knock, knock. – Who’s there?
B: Dexter.
A: Dexter who?
B: Dexter the halls with boughs of holly ...
4) A: Knock, knock. – Who’s there?
B: Wencelas.
A: Wencelas who?
B: Wencelas bus home on Christmas Eve?
5)A: Knock, knock. – Who’s there?
B: Snow.
A: Snow who?
B: Snow business like show business.
6) A: Knock, knock. – Who’s there?
B: Mary.
A: Mary who?
B: Mary Christmas.