Open the door get on the floor everybody walk the dinosaur open the door get on the floor everybody walk the dinosaur.
Everybody on the floor dinosaur.
The point of it is to be telling a really raunchy or interesting story and then abruptly end it with open the door get on the floor everybody walk the dinosaur thus the expectant reader is trolled by the lack of a climax to what could have been full of win.
The preceding lines are the incredibly catchy.
Everybody walk the dinosaur open the door get on the floor everybody walk the dinosaur open the door get on the floor everybody walk the dinosaur i met you in a cave you were painting buffalo i said i d be your slave follow wherever you go that night we split a rattlesnake and danced beneath the stars you fell asleep i stayed awake and.
Everybody walk the dinosaur is a copypasta meme originating from 4chan.