Celebrities have feelings too but they also have a sense of humour.
To celebrate the sixth anniversary of Twitter (Six? Already?), US TV host Jimmy Kimmel enlisted Kristen Stewart, Katy Perry and Justin Bieber among other high-profile names to read out some of the meanest and most colourful tweets they've received.
Watch the video above for priceless moments such as K-Stew reading a post from someone who "liked her better when she was a boy". Burn!
Katy Perry has perhaps the best tweet of the lot, and the look on her face says it all.
Other celebrities who took part in the Jimmy Kimmel Live video include Friends' Matt Le Blanc, Dawson's Creek's James Van Der Beek, Katy doppelgänger Zooey Deschanel, and comedian David Spade.