butt killer

(Noun) A person, usually a male, who aggressively pursues anal sex, and other forms of anal sodomy with foreign objects. The butt killer does not discriminate on the basis of gender; he goes both ways. While not always engaging in rape, a butt killer will nonetheless resort to rape in the absence of a willing partner. Consent is immaterial to the butt killer. The butt killer is generally very rough and enjoys demeaning his partners/victims.

A person that has a face that looks like a butt and is very violent. Their face (which is a butt crack) holds a knife that they bring out to kill. He also walks around not knowing where he is going due to his butthole being his eye. After the kill, he goes to the bathroom to drop a fat nuke.

Someone who's a fan of anal penetration/sex; this person is usually male with a sweet, innocent, baby face until he gets you into the bedroom and turns you around for a bloody massacre or at least a seemingly innocent finger job on the rim. This person will also claim that anal is a commitment and a means to taking the relationship to "the next level." Note: Don't drop the soap.
(If the butt-sex killer is female, which rarely occurs, watch out for her from-the-back hugs and try not to leave the door unlocked while you shower.)
Also, the bsxklr (which is the abbreviation) should be noted as a well meaning type of person and should be appreciated and loved as such.

A really nice ass