Top Definition
Superboy prime is the superlative of boy prime. Boy prime is someone who enjoys stuffing objects, preferably big black dildos, up their rectum. Essentially Superboy prime means a really big fag.
Yo the biggest Superboy primes are Elton John, Perez Hilton, and rainfall
by GODofTP October 02, 2013

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×