1 definition by D.L.R. 91

Top Definition
A male not allowing another male get some...( hitting a home run)
Ex:

Lana: hey Clark, wanna come over my house today?

Clark: sure

Lex: dude,you can't go. We have B-ball practice today.

Clark: oh yeah that's right.

*moments later after Lana leaves*

Clark: Lex what's your problem?....you're such a COCK BLOCKER!
by D.L.R. 91 March 01, 2008

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