When one is 'prairie doggin it' and clinches his or her rectum at a most inopportune time, resulting in a small turd being cut from the larger mass of shit completely or partially as a dingle-berry.
"Decapitate the Dog"
Dude, me and the bros were cruising down the interstate and i was prairie doggin mad until a deer ran out in front of the truck and we slammed it. Totally decapitated the dog man, it was embarrassing.
by Dingle-Dog July 15, 2012
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Cattle Decapitation is a bad-ass 4 man death metal/deathgrind band fronted by lead singer Travis Ryan.
Guy 1: "Dude, we need to see Cattle Decapitation on Friday. I heard they're playing 5 songs from Monolith of Inhumanity."
Guy 2: "Sounds like a plan! I'll get tickets."
by Jigginsmusic October 29, 2014
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when you are turtle heading, or plain taking a dookie, and you "cut loose" the protruding mass of excrement by clenching your sphincter tight mid turd
"damnd that was a long crap, i had to decapitate the turtle before it touched the water"
by Dan the pc butcher March 1, 2008
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An extreme cut and blow dry that dramatically changes the persons look.
by B247E June 30, 2011
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The act of shoving your entire head up another person's ass and having them clench till the bloodflow is cut off to your head
Bro 1: Bro my gfs kinda pissed at me cause I asked if we could do Anal Decapitation

Bro 2: Why would you even ask that
by Johnny-k17 November 3, 2019
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When you are eating out a girl and she squeezes her thick thighs together so hard that she decapitates you.
Damn... that thick mami just Leonardo Decapitated my buddy last night.
by yungcleen March 15, 2018
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Chopping someone's head off with your dick
OMG! I just witnessed some dude performing a phallic decapitation
by Matt Dasher September 27, 2007
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