It is when a guy has sex with or aggressively pursues a girl who he knows has already had sex with a friend of his at least once.
"Man, I can't believe you keep going after her like that. You knew she was with me."
"No way! You never got anwhere with her, so no stable violation."
"No way! You never got anwhere with her, so no stable violation."
by Bond, JamesBond November 19, 2009