photomom 

When someone's mom purposefully or incidentally photobombs a picture. (Almost always viewed in a negative light.)

Sweet house party man! Too bad half of the pictures were photomomed.

photomom by thegordinator October 5, 2010

photomom 

photomom is a mom of somebody at a photoshoot who brings chips and iced frappuccinos and does background checks on photographers

wow your mom brought chips and iced frappuccinos--she's such a photomom!

photomom by Patrick R August 12, 2005

photobombing 

Intentionally posing in other people's photos, for a later surprise.
Usually people making funny faces in the background, without the knowledge of the main subjects of the photo.

Jim is always photobombing, he messed ups some of the best photos from the wedding.

photobombing by U8IK May 6, 2008

photobomb 

(verb)- to drop in a photo unexpectedly...to hop in a picture right before it is taken.

sarah: hey why is jimmy in the background of our prom picture?
ryan: idk, he must have photobombed it at the last second.

photobomb by jervis_star1 June 27, 2008

Photobomb 

An otherwise normal photo that has been ruined or spoiled by someone who was not supposed to be in the photograph.

The most common photobomb is someone in the background making a face.

Photobomb by Teresa from OK November 16, 2009

PhotoZombing 

A subset of Photobombing where someone deliberately appears in the background of other people's photos while adopting a zombie-like pose.

Man did you see James picture on the beach, there's some guy photozombing in the background like totally night of the living dead.

PhotoZombing by Groaning Required September 21, 2011

Reverse Photobomb 

(verb)- a photo taken without the knowledge and awareness of the person in the foreground, but known and planned by the person in the background and the photo taker. Basically the reverse of a traditional photobomb, where someone unsuspectingly jumps into the background of a people-posed photo.

Lark: Hey Jan, let's reverse photobomb Craig!
Jan: I'll run up behind Craig and pose. If he see's me, he'll have no idea what I'm doing.
Lark: This is going to be a great RPB pic! Let's RPB Gike Mallego next!

Reverse Photobomb by Captain Incredible x Infinity June 2, 2015