“The first door in the hall leads to youth, the second door leads to middle age, and the third door leads to the bathroom. But knock first, because I think grandpa’s in there.”

“I’m a door-to-door salesman. I sell doors. If I can’t knock on yours, because you don’t have a door to knock on, I know you’ll be interested in what I’m selling.”

“I never got to call myself a door-to-door salesman, because, regrettably, I only ever went to one door. But one day I just might knock on another door, to be able to proudly say that I was once a door-to-door salesman.”

“I think Gummy Bears should be the universal symbol for peace, because peace leads to prosperity, prosperity leads to decadence, and decadence leads to diabetes.”

“If I tell you I want to be a door-to-door salesman, don’t knock it.
”

“If it’s dangerous, then you go first. If it’s pleasurable, then I’ll be brave and lead the charge.”

“I wonder if rooms in an insane asylum have Do Not Disturb signs for the doors. I should hope not, because knock or no knock, every occupant in those rooms is already disturbed.”