Need further proof RiFF RAFF is an idiot?

It seems he wasn't thrilled about Sam Smith cropping him out of his post-VMAs Instagram photo, which featured Smith sandwiched between Katy Perry and Charli XCX.

In response, the clownish rapper took to Twitter on Friday with a hateful tweet directed at Smith: "THANKS FOR CUTTiNG ME OUT OF THE PiCTURE U CHUBBY LiTTLE FUCK FACTORY. P.S. YOUR FACE iS SUPER HUGE."

The immature response suggests RiFF RAFF thinks he's still in high school, or that having yourself cropped out of a photo warrants such a venomous reaction. As seen in the original photo (above), it's clear RiFF RAFF didn't exactly add much anyway.