1. Derrick
Meaning intellectual, or very bright.
Also, may be the stage of intercourse when the male may become aroused, or sexually ready for intercourse. When semen flows to the penis. When the penis becomes excited and gets hard and "stands up", for the sexual pleasure of a female, or another male.
Felmale: "Hunny, did you Derrick yet?"
Male: "Wait, I just got it, let's go!"
intellectual intercourse aroused penis sexual pleasure
2. Derrick
an asshole who thinks only of himself. someone who does not understand the meaning of friendship, who takes people for granted, and will do anything for his own instant gratification.
He's just another Derrick, don't waste you're time!
careless selfish jerk instant gratification slut
by any girl who knows him
3. Derrick
An ape like creature that tosses it off all day and works on an allotment, hands are hairier than Robin Williams.
http://www.urbandictionary.com/define.php?term=Derrick
You guys thought yours was bad...