There's none. They both knock on the door, but never goes in!
A watermeloin.. Don't worry, I remember where the door is.
He was selling In-Security Heh yeah i dunno i thought it up in a dream and I'm still half asleep bye
Yogurt could develop a culture after 200 years
Ice cream fits in a tub.
When it falls to the ground, it knocks the 'ell out of it.
Doctor.** Doctor who **YES**
Knock, knock, knockin on Heavens door
Because they don't like random people knocking on their doors
That I will open the door
Test tickles
