Go Long-Penis
Being attracted to a girl, but not wanting a committed relationship. All you want to do is have sex with her. Another term for "hit it and quit it."
Guy A: "Dude, why don't you two date?"
Guy B: "I'd rather not. I mean, I'd go long-penis, but not long-term.
Guy B: "I'd rather not. I mean, I'd go long-penis, but not long-term.