G.S.I gross sexual imphositon
G. S. I is when someone tries to say you had sex, but you didn't. It's like a fake story with no real parts.
He said I had G. S. I, but I was too busy making a sandwich to care.
She said I had G. S. I, but I was too busy daydreaming.
He said G. S. I, but I was too busy thinking about my crush.