Scrotobomb
To hang your scrotum out behind someone in a picture without their knowledge.
Oh my God, that guy scrotobombed our family picture.
scrotobomb
A photobomb but with a man's scrotum or ball sack showing
Dude, your scrotobomb last night was hilarious but you might want to get your balls checked by a professional.
scrotobombed
When a scrotom works its way into the picture frame of an otherwise appropriate photo.
He should have crossed his legs while having his picture taken. He totally scrotobombed that photo.