GAY Acquired Immunodeficiency Syndrome. Gay AIDS basically. Gaids is at least ten million times worse than regualy aids. Gaids makes normal aids look like an itchy rash. Also comes in a collectors eddition GAIDS-C, the C standing for cancer.
Wow, looks like you have a badcase of G.A.I.D.S. after your rounds with Hemi. Fag.
GADIY stands for "Go And Do It Yourself". Another simple phrase to tell someone to do their own things by themselves.
john: hey, can you help me get some juice from the fridge?
mary: What?? I'm busy here! G.a.d.i.y.!
john: what's that?
mary: It says, GO AND DO IT YOURSELF!