A more sophisticated version of the aptly named cockblock, to be used in all instances where cockblock is applicable, and now available as a gender-neutral sex declining measure.
1. As Steve approached Anastasia with a passionate kiss and nuzzled in for the perfect moment, Otherpat walked into the room, and libido vetoed Steve with a vengeance.
2. Knifeboy was with one of his many girlfriends at 11pm, his third score of the night, when his Mom called, and totally libido vetoed him.