photobombing

UK [ˈfəʊtəʊˌbɑmɪŋ] / US [ˈfoʊtoʊˌbɑmɪŋ] noun [uncountable]

the practice of spoiling other people's photographs by making silly expressions or moving into the background just before the photograph is taken

Photobombing looks set to be the new craze for students.

Derived words:
photobomb
UK / US verb intransitive/transitive
Word forms "photobomb":
present tense I/you/we/they photobomb he/she/it photobombs present participle photobombing past tense photobombed past participle photobombed

Click to see more celebs caught photobombing other celebs.

photobomb
UK / US noun countable
Word forms "photobomb":
singular photobomb plural photobombs

Photobombs are so much more fun when they involve celebrities.