(Verb) to slap a girl in the face repeatedly with your penis, mimicing a beaver tail patting a dam.
"Dude, my boyfriend Beaver Tailed me this morning! That shit is so not ok!"

"My Girlfriend wouldnt wake up this morning so I Beaver Tailed her!"
by Capt. Davinci July 30, 2008
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A poop so big it not only looks like a beaver's tail, but it acts like a dam in your toilet
Norman! You did it again. You plugged up the toilet with that beaver tail!
by D-brown May 19, 2020
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The male defecates (poops) in and around the woman's vagina lips. he then grabs his scrotum with his bare hands. and pats down the shit inside of her. All in all having a good time.
Wow i gave Carla the best Beaver tail last night! She will be cleaning it for years!
by Jagak November 26, 2009
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The act of 'tucking' ones genitals behind their legs and ironing the protruding shaft until black and tail like
Niddlebert: Jesus, why did you beaver tail yourself?
Fiddleshwert: I needed to build a dam for monsoon season
by Robbadob August 7, 2009
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A fecal streak in your tighty whities of such width, depth and color that it resembles the tail of a beaver.
Although I wiped until my ass was sore, I still had a beaver tail in my undies at the end of the day.
by Lord Blackstone March 31, 2015
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Bohdan: I hear that slag has a beaver tail.

Dr.honey: Oh shitfuck really?!

Bohdan: ... wanna ask if we can see?

Dr.Honey:HELL NO!!!... yeah kinda.
by Dr.Broseph July 8, 2009
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The act of tucking your cock n balls under your legs and allowing them to protrude when mooning someone for added effect.
Mooning someone < showing them the beaver tail.

The tail is reserved for those of high contempt.
by elwoood13 April 4, 2012
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