look up any word, like half chub:
 
3.
noun:

a person who without prior knowledge or consent, sticks anything in or around the premises of your butthole.

see also: Buttfinger, Asshole Assassin,
After my best friend Andrea did the weekly walk of shame from the guys house last night all the way back to my place, she then told me how her Thursday night fuck buddy "accidently" put a finger in her butthole.

Andrea: At first I thought he just got it in the wrong hole, but then it happened AGAIN...

Liz: Yo he totally violated your ass on purpose. He's a secret butthole bandit!
by ae123456 September 14, 2012
 
1.
An assfucker of opportunity. Usually someone who won't take by force, but participates in a gang rape or by slipping a 'Mickey' to someone and cornholing them while they are passed out.
Brian was afraid his cellmate was a butthole bandit.
by shazizizzle April 08, 2003
 
2.
some one who likes to eat out the ass alot
kent why you being such a butthole bandit
by alex mizzathews November 21, 2004
 
4.
A boy, who on new years thought it would be sexy to stick his fingers/fist in an unnamed girl's butthole.

There are plausible candidates, however the true bandits identity is unknown
Liam! What are you doing with your hand up Ana's butthole! You're being the ILL butthole bandit right now!
by jsilll February 06, 2011
 
5.
getting a bunch of naked guys and turning off the lights, then running around trying to stick your dick in someones ass in the pitch black darkness.
(if you so do this you are a super faggot.)
hey javier you wanna call the guys and play butthole bandits later?
by tymieshu June 13, 2008