It's a running joke that fathers will be waiting for their daughter's date with a shotgun.
Former NFL kicker Jay Feely thought he'd have a little fun with his daughter's prom date by posing with the couple and a gun.
It's clear to anyone who's seen the movie Bad Boys II that he was referencing the part in the movie where the main characters intimidated the date of one of their daughters. Although many did get the joke, Feely was reprimanded for an ill-timed joke considering the social climate of the world today.
Feely then decided things were getting a little out of hand, and offered this explanation/apology.
Hopefully the kids had a good time at prom and didn't check Twitter at all.