G.S.I. Gross Sexual Imposition
G. S. I. is like being sexually molested but not quite rape. It's when someone tries to stick their junk on you, but it didn't go all the way.
My brother tried to touch me and said 'this is G. S. I. not rape!' I said 'it's still gross!'
My friend got in trouble because the guy tried to grab her leg during gym class. She called it G. S. I.
My cousin got in trouble for trying to touch me in the hallway. He said 'it's not rape, it's G. S. I.'