strap on dildos that are worn by men with disfunctional penises, a woman in a lesbian couple, a woman penetrating a man's anal hole, a man having sex with more than one person, etc.
they are attached to harnesses
Dude, were gonna have a threesome tonight so im gonna bring one of my strap-ons so i can fuck both girls at once!
a fake penis attached to the body by a strap, often used by lesbian females to perform intercourse. also used by experimenting chicks who want to know what it feels like to have a penis.
Ceci: "Dude, I'm a chick. I want a strap-on so bad!"
Kelly walked in with a strap on and said, "Angelina, I'm ready for round three."