backseat bushwhack 

a term refering to fucking in the backseat of a car

I was having a backseat bushwhack with my boyfriend in the parking lot at McDonalds!

backseat bushwhack by Jennifer Love May 29, 2007

Backshift 

Working long hours late at night at a thankless job all the while getting subjected to constant anal sex.

Anthony has to work another backshift but I think he digs the anal.

Backshift by Anthony is not a bot... August 17, 2019

backseat bingo 

50s term for necking in the car.
Also appears in Big D and the Kids Table song "Noise Complaint"

"We were hanging out in the back of the van."
"What were you doing?"
"Just playing backseat bingo"

backseat bingo by simplyjam March 26, 2007

Swahilian Backslap

swah-hee-lee-an bak-slap When receiving oral while standing, right before ejaculating, the person receiving oral defecates on their hand, and proceeds to slap it on the back of the person who is giving the oral.

Lilly: "So like omg, i was giving head to Billy and right before he came he took a shit in his hand and slapped it on my back!"
Leah: "LMAO he so gave you a swahilian backslap!"

Swahilian Backslap by crumble cakes September 24, 2010

Backseat Chess Player 

Anyone (or even possibly a group) that stands over your shoulder while playing chess, and the person always claims to see an awesome move for either you or your opponent. This gets so annoying especially when you the moron says, "Oh you didn't see this awesome move!" Then points his fat finger on your board, or touches the pieces. They cause me slight stress due to their annoying hints for the person I am supposed to checkmate...or they keep saying in my ear like a slimy snake, "I see a good move." Sometimes their moves are good, but most of the time they have not a clue what they are talking about and can stick you in a worse situation or cost you a nice piece. Do not take advice from them, and if your opponent is a real chess player they will give them the bird and tell them to shut up or shove off. The best way to repel them is to just ignore them, or flat out tell them you can play better than they can and then prove it in a match.

Stop helping, damn backseat Chess Player.

Backseat Chess Player by G.Stefani704 May 23, 2011

Backspiration 

Backspiration is when someone sweats profusely from his/her back causing a big wet mark. Backspiration is an undesirable occurrence unless actively trying to ward off members of the opposite sex.

Normally I’m super embarrassed by my backspiration, but it sure does help keep Joe, that creep from accounting, at bay.

Backspiration by SupernaturalGoldfish December 10, 2014

beijing backer 

Verb: the action of getting fucked from behind in a Sanlitun back alley in Beijing.

"I totally gave that white girl a beijing backer the other night."

beijing backer by doratheurbanexplora July 1, 2017