have a hard-on

have a hard-on

vulgar slang To have an erection. I hope that pretty girl couldn't tell I had a hard-on the whole time she was talking to me—how embarrassing!
See also: have
Farlex Dictionary of Idioms.

have a hard-on

tv. to have an erect penis. (see also hard-on. Usually objectionable.) I had a hard-on through the whole movie.
See also: have
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • have a hard-on for (someone or something)
  • have a hard-on for someone
  • have a bone on
  • hard on
  • hard-on
  • make a mountain
  • morning tent
  • have the horn
  • have lead in (one's) pencil