Two taps, one punchline.
Harry who? Harry up and open the door!...
Noah who? Noah good place to eat around here?...
Cargo who? Cargo beep beep, vroom vroom!...
Luke who? Luke through the peephole and find out!...
King Tut who? King Tut-key fried chicken!...
Orange who? Orange you glad I didn't say banana?...
Radio who? Radio not, here I come!...
Avenue who? Avenue heard this joke before?...
Ivan who? Ivan to come in, so please open up!...
Alpaca who? Alpaca the trunk, you pack the suitcase!...
Dozen who? Dozen anybody want to let me in?...
Weekend who? Weekend do anything we want!...
Howard who? Howard I know?...
Alex who? Alex-plain later, just let me in!...
Ben who? Ben knocking for 20 minutes!...
Thermos who? Thermos be a better knock knock joke than this!...
Canoe who? Canoe help me with my homework?...
Wanda who? Wanda hang out with me?...
Abby who? Abby birthday to you!...
Justin who? Justin time for dinner!...