When a guy is fucking a girl's pussy and he sticks his fingers in her butt at the same time.
Keirsten's toes curl and her body tingle's all over when Chad finger butt fucks her!
by SlopNChop August 19, 2016
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In the act of wiping one's bottom, when the toilet paper tears and, inadvertently, a finger plunges into the butt hole. (Occurs especially when using cheap toilet paper or when wiping too hard). Can result in a stinky fingernail.
Guy in toilet: Oh, dude, gross!
Guy outside: What happened?
Guy in toilet: I was wiping and I accidentally did the one-fingered butt plunge.
by LongWayfromHome September 7, 2010
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My boyfriend, Mike, begged me for a five finger butt blast last night. Now my wrist is sore.

Jeremy gave Jacob a great five finger butt blast today, he said he's never gotten his fist so far up another man's rectum before.
by Johnny Jerk Off July 26, 2013
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The placement of index and middle finger into another persons anal cave, and moving them in a back and forth "saw" motion.
Dude if you don't cut the attitude I will have to break out the two-fingered butt saw and give you an adjustment.
by Lt. One-Eye September 30, 2006
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to stick one's finger up their own ass while sleeping. Then place that finger near their nose!
Dude, it was hilarious! Last night we got completely thrashed and butt fingered Ronnie!
by steve April 21, 2005
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when wiping ones ass after a messy dump. you find that you got shite all over your finger.
"god damn it i just got serious butt finger from that shit."
by i love picking my arse May 21, 2006
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school yard taunt. Denotes the person is icky
"that Tommy is a crusty finger fungus butt"
by Peter Rothe March 6, 2008
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