G.S.I. Gross Sexual Imposition
G. S. I. is when you're touched sexually but it doesn't get all the way. It's like being molested but not getting the full experience.
He touched me, but it didn't go all the way. I called it G. S. I.
She had sex with him before, but this time he just grabbed her leg. I said it was G. S. I.
He tried to touch me during gym class, and I said 'it's G. S. I., not rape!'