8
to be very very sure, so sure that you'd bet you cock on it. From the classic British novel, Heart of Gayness
by tom wage September 14, 2003
9
The confidence you have knowing your cock is doing the damn thing.. You try "taboo" things and she just goes with the flow...You're so "Cock-Sure" she just doesn't say no...
by Hottie McNaughty June 05, 2012
10
To be incredibly boastful over the size of your penis; being excessively overconfident about the size of one's cock.
When Sarah asked Jim about his size, he answered in such a cocksure way that he got that bitches pussy wet.
by Kevin R. P. February 22, 2008
11
To be outlandishly boastful over the size of your penis; excessively overconfident about the size of one's cock.
When Sarah asked Jim about his size, he answered in such a cocksure way that he got that bitches pussy wet.
by Kevin R. P. February 16, 2008