photobomb 

the explosion of tagged pictures from multiple sources to a person's facebook page after an event.

when i got back from mexico my facebook page was photobombed.

photobomb by rmashate November 2, 2009

Photobombed 

The act of interrupting an intercourse by pushing, pulling or otherwise moving the interested parties and proceeding to place one's own face in between the genitals during the climax, so as to reenact a photo bombing.

Dude I was banging this one girl in the pub's bathroom and a random drunk guy just slides in from under the stall and photobombed me right as i was busting the nut.

Damn, that's nuts.

Photobombed by Butters997 March 2, 2021

Photobomby

The art of photo bombing one's picture

I am a master of Photobomby

Photobomby by PromQueenForever December 14, 2021

Unintentional Photobomb

When you accidentally manage to get in someone else's photo. (And it ends up biting you in the ass later. i.e. Getting caught cheating on your partner or otherwise lying to them about where you were and/or who you were with.

Me: "I was looking at cool event photos from a few years ago, and saw my husbands lying ass drinking with a buddy and two chicks. He said his ass was going for a ride on his motorcycle that day!!"

Friend: "Unintentional photobomb... Does it every time."

Unintentional Photobomb by Sporadiclove February 28, 2015

photomomb 

When a mother photobombs their kids' pictures, often causing laughter, embarrassment and retakes

I always have to retake my pictures because mom is in the background doing a photomomb.

photomomb by CricketNation May 24, 2016

Photogbomb twat 

Female whose insecurities drive her to catch unflattering pics of women whose looks have triggered the roving eyes on their love interests.

Subversive Suzie the photogbomb twat, caught a most unflattering pic of the busty,bench pressing, chick at the gym that stirred a serious man ogle erection in her man.

Photogbomb twat by anonymous November 2, 2019