Anybody who watches Jimmy Kimmel Live! will no doubt be familiar with his "Celebrity Mean Tweets" segment. It's a part of the show where celebrities (and sometimes Presidents) read out harsh tweets about themselves, and as you can see from this hilarious collection, some of them are downright brutal! From Jennifer Garner being told she looks like a duck's lady-bits to George Clooney reading aloud about how he's a lumpy-faced bastard, the tweets below are seriously savage, but they're also seriously hilarious. Don't forget to vote for the meanest!