A pretty cool guy; absolutely fearless; very nice; vicious in bed; has a flaming barbed penis; may tear you in half but you don't care; kinda gay
I heard that guy's a Derrin!
by Grande Dick October 18, 2012
A kick-ass girl who you want to have on your side in a fight. She's hard to get to know but once you get to know her, you know it was totally worth the effort it took to get there.
Who's the coolest Derrin you know?
by straiders February 02, 2010