cockblocked

Verb

cockblock (third-person singular simple present cockblocks, present participle cockblocking, simple past and past participle cockblocked)

1. (idiomatic, slang, transitive, vulgar) To make or attempt to make another's intended goal of romantic relationship or sexual intercourse impossible.
   • [T]o COCK BLOCK: to interfere with a male's attempt to 'win over' a female, even if the other male is not interested in the female himself.[1972, Edith Folb, A Comparative Study of Urban Black Argot: Final Report, page 135
2. (broadly, idiomatic, transitive) To prevent someone from achieving a goal, aggressively getting in the way (e.g., an intentionally difficult level of a video game).

See all 4 meanings of cockblock