A said person who only has sexual intercourse with virgins.
Person 1: Hey did you hear what Dan got upto last night?
Person 2: Hahaha, yeah. Him and Ashley, right?
Person 1: Yeah, he's such a lamb slayer.
Someone who only has sex with virgins.
Person 1: "Last night Greg fucked Penolope"
Person 2: "Man, Greg's such a lamb slayer. WHAT A BEAUTY!!!!!!"