look up any word, like kappa:
 
1.
Ice cream flavor at Bruster's
A purple dinosaur is Kayla's favorite ice cream from bru (cherry) ster's.
by southhillshusky July 04, 2008
 
2.
Term used by interveinous drug users, the big juicy vein chose into which the needle goes when injecting drugs.
"I'm just going to stay home and tie off the purple dinosaur tonight."
by collector girl October 26, 2007
 
3.
A purple dinosaur is when your scrotum is soft and you squeeze it so hard it turns purple as it starts getting harder and harder.
I was so bored I decided to give myself a purple dinosaur.
by spodderman May 25, 2014
 
4.
When you suck your man's dick sooo hard it turns purple!
"Yo, did you hear that chick down the street that gives purple dinosaurs for free?"
"What's a purple dinosaur?"
"Do You know what hickies are?"
"Yeah."
"It's basically a DICKIE."