Slam Dunk 

Random acts of Duncan. Everybody knows a dude named Duncan that is wildly unpredictable. A "Slam Dunk" is an action, or an opinion, that is not beneficial to society. Slam Dunks are usually ridiculed for being so out of place and detrimental to a good time (ie: parties, epic Facebook threads, and conversations), but have been known to produce laughs. In general, Slam Dunks are usually a bad thing.

In speech, "Slam Dunk" is usually used before or after the word "Bitch"

Dude 1: "We had this post on our Facebook group. It had a thousand comments on it, but Duncan deleted it"
Dude 2: "What!? Why'd you do it, man?"
Duncan: "It was my post bitch... Slam Dunk!"

Dude 1: "Did Duncan just walk through the drive-thru?"
Dude 2: "Yes sir... Slam Dunk"

Dude 1: "Hey Duncan, How was Spring Break?"
Duncan: "Well, I don't remember half of it, so.... Slam Dunk, bitch"

Slam Dunk by W3B5T3R April 16, 2013

Slam Dunk 

The act of punching the asshole of another person, usually as a surprise attack or otherwise a torture.

Gavin slam dunked Annie! 50 Points!

Slam Dunk by Anonymous August 26, 2003

Slam dunk 

a complete fabrication, lie, falsehood, misstatement of facts, perjury

George Tenet told Congress that it was a "slam dunk" certainty that Saddam had weapons, because technically slam dunk doesn't mean anything when applied to a true/false statement. (Also see Perjury)

Slam dunk by Stinky Weazaltits March 25, 2007

Slam Dunk 

Shortly after a woman gives birth, a witness in the room proceeds to palm the baby's head and redirects the newly born baby back into the womb.

Father, about his newly born child: I was really quite surprised when the obstetrician slam dunked little Maxwell.

Slam Dunk by Jackie Peterpants March 18, 2010

slam dunk 

A word for slut when your 6 year old brother or your parents are in the room.

Bob: How was the party
Me: Good there were so many fine--
(brother walks in)
...slam dunks...

slam dunk by bob November 16, 2003

slam dunk 

When you cup your hand above someones chest and push down on their tits. Usually done after scooping someone

person1: SCOOP!!! HA I JUST SCOOPED YOU!

person2: SLAM DUNK!!

person1: aww!

slam dunk by jack hunt June 9, 2011

slam dunk 

an alternative to teabagging, the act of touching ones testicles to another's face

Alex is going for the sexy slam dunk. What if the shot clock runs out?

slam dunk by the Chillburger April 6, 2009