To "LosCap it" is to have sex with an ex boyfriend or girlfriend, without getting back together with them. Named after the Australian ska band "Los Capitanes" whose song "Finding Emo" was used as the theme song for the act of sleeping with an ex.
Commonly known as "LosCapping it".
Hey dude, I Los Capped it last night.
That's okay, I've been Los Capping it for the last 8 years.