Any stupid/retarded/stereo-typical reasons that a woman will not have sex with a bf/ husband. Its basically a blockage of their vagina hence a cock block. For the boyfriend after being together for at least 3 and a half months and having oral with each other, saying that you are "not ready" to have sex is one of the most common cock-blocks and is inexecusable. For the Husband, saying that you are not in the mood is also unexceptable. If you have a baby within the last year or are pregnant those do not meet the requirements to be called a cock-block. The woman being on her period is the one acceptable excuse and does not qualify as a cock-block
" Man me and my girl have been together have been together for 6 months and we still havent had sex yet!"
"Damn dude, thats a real cock-block she's putting up there."
"It's been a year since me and Charlotte had Timmy and she still doesn't want to have sex....Fuck her stupid cock-blocks"