フォトボム

noun, noun or participle which takes 'suru'

photobomb

Slang term for unexpectedly appearing in someone's photo, often as a prank. Used as both a noun and a suru-verb.

• 友とも達だちが写しゃ真しんにフォトボムしてきた。

  My friend photobombed the picture.

• あの猫ねこのフォトボムが一いち番ばん面おも白しろかった。

  That cat's photobomb was the funniest.