Blind from the waist down
An expression used to describe someone who is bad in bed.
Maria: Whoa! Look at that hunk. I'd like to get with that guy.
Julia: Yeah that's Dave. He's pretty sexy but I heard he's blind from the waist down.
Maria: Oh....
Julia: Yeah that's Dave. He's pretty sexy but I heard he's blind from the waist down.
Maria: Oh....