There are few things worse in this life than to help out someone only to have them betray you.
This dude is trying to help out his girlfriend perform some acrobatic flips in the living room but gets a nasty surprise.
As the girl is upside down with her rear end directly in front of her boyfriend's face, she unleashes a fart directly in his face.
Dude's head cocks back as if he was punched in the face although I guess technically he was hit in the face.
To be fair, it seems like his arms are pressed tightly against her lower abdomen area during the flip. But then again, the fart is so perfectly timed to hit him in the face that I think it was on purpose.