backfail 

1. When a backfire results in an epic fail. Like when trying to say "backfire" and saying "backfail" instead.
2. Describes the result of aging to a persons back.

Wow dude, your joke about the Swedish dwarves totally backfailed. Now no one will go to your birthday party.

backfail by khao niaow mumuang August 31, 2011

backfailed 

When you can't pull out fast enough to put your load of semen on a girls back.

When Kirkland couldn't pull out fast enough, he quickly backfailed inside of Bri.

backfailed by SantaClausHaha May 22, 2010

Backfill 

To skip ahead and come back later to pick up the pieces.

Person 1: "How's your assignment going?"
Person 2: "Good, I did the conclusion first and I'm going to backfill the rest later."

Backfill by Connor158910 April 14, 2018

bankfails 

bankfails, also known as andreimane is a romanian 2020 audio maker that usually uploads romanian songs for cringe emos to use on "Da Hood". He is also the founder of papanasigang.

bankfails yuh yuh!!

bankfails by bankfails_uwu December 25, 2021

Backfill 

Whilst performing sexual intercourse, in the Doggie Style position, the non-receiving partner lubes up his/her hand and rabbit punches the receiving partner's anus. With luck, the fist will slide in, and be rapidly retracted, causing the receiving partner to gape. The non-receiving partner then quickly spins 180 degrees, and takes a rotten dump into the receiving partner's rectum.

Amanda: "Wow Jim that feels wonderful!"
Jim: "Backfill, bitch!"
Amanda: "OH MY ASS WHY!?"

Backfill by Nuglord April 22, 2011

backfill 

The act of shitting one's bed usually while in an intoxicated state.

"I backfilled something awful when I was a lad." Couldn't get the shit out of my duvet for 2 weeks."

backfill by Steve November 13, 2003

Backfilling

Person 1 lays on back, pulling knees to chest, making an impromptu toilet. Person 2 then sits on "toilet", shits into person 1's ass. Person 2 "back fills" person 1.

Once Bill assumed the position, Marc began backfilling him.

Backfilling by Eggfarticus May 24, 2017