O.P.S.J.
It’s when someone takes your junk and gives it a full-body hug through your pants.
He got an O. P. S. J. during a football game and couldn’t run for the rest of the match.
His crush did an O. P. S. J. in the hallway and he dropped his lunch all over the floor.
At the park, he got squeezed by his friend’s sister and it was the worst day ever.