backsmack 

action verb: To strike another person because they have just pissed you off. One can backsmack by thought, word, or deed.

Steve: "Did she just cut you off?"
John: "Yeah, I 'd like to backsmack her!"

backsmack by Lexie 1912 November 1, 2008

Backsmack 

To talk about someone behind their back

Brittany:"wow she looks really ugly"
Jessica:"sorry I don't backsmack"

Backsmack by Backsmack September 12, 2014

backsmack crew 

A high professional gaming team on steam and worldwide.

Man, I just got owned by this team called Backsmack Crew .

backsmack crew by yA HIGH BOY November 18, 2017

Eugene Backpack 

Noun:
A carrying book bag of any sort or size, preferably something large enough to carry a fire arm in.

"Eugene was reaching into his backpack when in the classroom and all was silent..."

"The police investigated a eugene backpack, only to find zipties, a fedora, and a loaded nine milimeter handgun."

Eugene Backpack by innocentEugenewithbackpack May 27, 2016

What the frick frack diddily dack patty wack snick snack crack pack slack mack quarterback crackerjack biofeedback backtrack thumbtack sidetrack tic-tac is this shit 

The ultimate expression of "What the fuck", this word is to be used only in the most extreme of situations. Brutal overuse of this term could lead to a tear in the fabric of the universe, causing reality to fall apart at an abstraction rate of 7.59 Cuils per second. Please be very careful with the word you have just read. The power of the cosmos rests in your hands.

John Watson: Holmes, I do believe this was not a murder, but in fact a suicide.
Sherlock Holmes: What the frick frack diddily dack patty wack snick snack crack pack slack mack quarterback crackerjack biofeedback backtrack thumbtack sidetrack tic-tac is this shit
Universe: *collapses*
Watson: dammit Holmes

What the frick frack diddily dack patty wack snick snack crack pack slack mack quarterback crackerjack biofeedback backtrack thumbtack sidetrack tic-tac is this shit by Fetchez la vache March 28, 2015

Kenyan backpack

A sexual position in which one partner is standing, and the other partner is piggy backing upside down on the first. The upside down partner places their head between the legs of the standing partner and performs oral sex on them.

The couple was hospitalized after trying to perform a Kenyan backpack without stretching first.

Kenyan backpack by JayTeeF May 11, 2009

backpack race 

When someone is drinking beer/alcohol/etc, and someone else jumps on their back like a backpack and forces them to chug the beer. Usually done with two people at a time. Whoever gets the beer down first is the winner. The beer guzzler usually goes insane.

Kristen totally beat Kelly at the backpack race last night. Tubby lost his mind he drank so fast.

backpack race by MMjr May 26, 2008