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1.
1. (informal.) diet coke
2. an unnaturally small penis, usually found only on midgets.
1. hey DaNaGe gemme a diet cockage (see -age, gemme)
2. wow that guy has a diet cock ! (ill remember that next time im trying to lose weight.)
by gen October 06, 2003
 
2.
Refraining from having sex but still using play toy(s) in the form of the male organ for pleasure.
Friend: "Are you having him tonight?"
You: "No. I'll have a diet cock instead."
by Go Gurt April 11, 2011