I finally have it nailed down. The MEANING OF LIFE & STUFF. It was right in front of me for the longest time. Here it goes:

Knock knock,
Who's there
Tirrantasaurus Rex.
Tirrantasaurus Rex who?
Holy jumpin' shit man! You got a friggin' Tirrantasaurus Rex at your door and you're asking what his name is?

Don't be too quick to dismiss this as just another silly knock knock joke. There is a lesson here. I think it's this. Don't trust dinosaurs if you don't know them. You are wel
come. 

Naughty words:
Shit
Friggin'