Receiving anal sex after having eaten a VERY spicy meal.
Guy: Dude, go easy on those jalapenos
Girl: My boyfriend loves anal, so I'm giving him the afterburner
Guy: Ouch....
by John Jacobsen Junior November 14, 2008
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When someone's just been high from the effects of marijuana, and they're still coming down, they're said to be "afterburning."
Person 1: "Dude, are you okay?"
Person 2: "Yeah man, I'm just afterburning."
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The fiery sensation you feel on your anus after taking a potent shit; usually occurs after eating some sort of exotic food.
Deezam son, this afterburn is killing me. I shouldn't have eaten those burritos.
by the $cuN>| April 16, 2007
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The feeling you get the morning after getting extremely stoned the night before. Somewhat of a confused "not all there" feeling, as if you were still stoned but not.
Damn dude, we just smoked an O last night and I have afterburn.

I think I have afterburn, I got so stoned last night and I can't think straight.
by James Rodrickson July 9, 2007
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the remaining used herb, after you have vaporized it. Depending on the type of weed, this can be anywhere from black to a lighter shade of brown. The chances are if you're a stoner, you save this and use it in another way.
Tony: What do you do with your afterburn?
Gabe: I save it and smoke it. What do you do with it?
Tony: I use it to make cannabutter.
by StrungOut532 January 13, 2010
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The drowsy, tired, and undermotivated feeling people get after coming off of pot.
We did like ten huge hits each. I got so stoned. But when i came off of it I had such bad afterburn, so I fell asleep.
by thenazz520 September 13, 2007
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Letting out a fart right before you start to pee.
I hit the afterburners right before I pissed.
by Knuck You September 13, 2011
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