Stands for Too Much Information. The cool kid's way of saying they are grossed out by something you said.
Person 1: "And dude, it smelled so gross and it looked like it wa-

Person 2: T.M.I. bruh, T.M.I.
by Inotspeakproperenglishplzhelp November 17, 2017
Get the T.M.I. mug.