cockblock

present singular third person cockblocks · participle present cockblocking · participle past cockblocked · past cockblocked · alternative cock block

1. idiomaticslangtransitivevulgarTo 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

   1 more example

   Excitement surged through him and his groin tingled tight. He heard himself growling low in his throat. At his stop he considered staying on. Maybe she would get off without the dude. Cockblocking chump motherfucker.

   1986, A. R. Flowers, De mojo blues: de quest of HighJohn de conqueror, page 94

2. broadlyidiomatictransitiveTo prevent someone from achieving a goal, aggressively getting in the way (e.g., an intentionally difficult level of a video game).

plural cockblocks · alternative cock block

1. slangvulgarThe act of cockblocking.
2. slangvulgarA person who cockblocks.