When one goes down on their male partner, takes their cum in their mouth, leans in for a kiss, and spits it back at their face without warning.
Steve: My girlfriend went down on me last night. She did the Alpaca. I'm still picking dried cum out of my eyelashes.
by Donatella Puckertaint February 21, 2013

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When a person or animal act a certain kind of wonderful when not under control of themselves
Last night was crazy good thing I'm just an alpaca
by Barracudabtch June 01, 2014

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Alpacas are the most majestic creatures to ever roam Saturn but are used as a joke here on earth.
Alpaca my bags and I'll be going.
by Cianedmond February 27, 2016

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Alpaca is term that refers to any weapon with a greater destructive force than a shotgun. I.e a rocket launcher or something of that nature.
Example: "Bruh, I got the alpaca now let's fuck shit in grand theft auto."
by Helping deep November 25, 2015

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Slang term referring to the packing of a bowl of weedies. This is used when not wanting to be obvious of ones intentions.
Hey brosef, why don't you alpaca it up?
by palungus September 11, 2010

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Like a llama, but not as good
Llamas are cooler than alpacas
by Alexiplier777 June 04, 2015

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As everyone knows, the alpaca is a South American quadruped known for spitting. This inspires the name given for insemination by spitting semen into the vagina. This is a requirement for impregnation for men with a micropenis. The technical maneuver involves masturbation of the micropenis into one's hand, ingesting and then spitting into the vagina.
Robert and his wife are expecting a baby girl in September. Obviously, he performed the alpaca successfully, given that he's nearly dickless.
by DrChode May 22, 2009

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