cockblockstress 

A female who specializes in the area of cockblocking. That is, she will knowingly and expertly prevent a guy from using his cock in a sexual matter, usually with a pre defined partner. Such activities will usually result in masterbation.

Guy 1: Dude, that girls chick prevented me from having some no pants time with her.
Guy 2: I know dude, she's an excellent cockblockstress

cockblockstress by CockblockHater4Life January 18, 2009

Cockblockasoress 

A seemingly attractive women with open sores on the borders of her nether reqion, abruptly halting further sexual advances.

"I got down to third base with wendy, but she turned out to be a cockblockasoress." said Aleron.

"damn," said Casey, "I guess she's off the list"

Cockblockasoress by Iandustrial April 25, 2014