We don't know what's meaner: calling Demi Lovato "DEMI LOVOTO," or asking to make any song of hers stop!
However, when both digs were read aloud in their tweet form by Demi, we basically had a Heart Attack from all the laughing we did!
We're not sure if these tweets are 100% authentic or just HIGHlarious jabs written by the writers over at Jimmy Kimmel, but one, this doesn't seem as written as some of the other Mean Tweets segments in the past, and two, a celebrity reading a personalized insult is still hysterical even if the tweets were written by the JKL staff!
Ch-ch-check out the clip that also features John Mayer, Katy Perry, and Selena Gomez (ABOVE)!!!
Tags: adam levine, brad paisley, celebs, demi lovato, fall out boy, jared leto, jimmy kimmel, john legend, john mayer, katy perry, keha, kid rock, lil' wayne, mean tweets, music minute, pharrell, reading, selena gomez, tv news, twitter