An empty can of beer that is mistaken for a full one.
"Hey bro, where's my beer, I just opened it?"

"It's on the table."

"Nope, not this one, it's a decepticon."
by DeltaRooster March 26, 2012
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girls who purposely lead on guys for the sake of shits and giggles. They always hint things to you and then as soon as you get think you like them and she likes you they step on your balls and disappear into thin air. It's usually a lame month long ordeal, possibly even longer.
So Carrie called me and told me to come over because her parents were out of town. I got there and no one was even home, so I called and she said there was an "emergency". She's such a decepticon.
by ohhhLeThaL November 30, 2006
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A fat women so fat fat fat you can't tell shes pregnant from all the fat.
Guy 1: Yo, did you hear about Bertha?

Guy 2: No man what's up?

Guy 1: Shes Preggo dude.

Guy 2: Holy shit dude, I cant ever tell. She's gone Decepticon Status.
Guy1+Guy2: BERTHATRON.
by dorktron March 1, 2011
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Another way of describing masturbation. More commonly when talking about Transformers fans. The semen is then refered to as Energon. If done in the bathroom, the toilet becomes the Space Bridge. Decepticons are the bad guys from Transformers.
"After Rick saw that hot babe with the DD breasts, he ran into the bathroom and started battling the Decepticon."
"How do you know?"
"There was Energon in the Space Bridge."
by William Gilson August 29, 2006
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An evil robot that got its ass handed to it by a stereotype.
Yo man, that punk ass decepticon just got da sheeit beaten out of him by that jew wit da pube fro...
by ndUBfiveONEoh June 29, 2009
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