Celebrities Twitter Beefs: Which Stars Threw The Most Shade At Each Other On Social Media?

John Mayer And Taylor Swift

Someone needs to school John Mayer on the golden rule of social media–screenshots are forever. In celebration of his ex-girlfriend Taylor Swift’s birthday, Mayer tweeted a scathing commentary of the date itself. “Tuesday, December 13 may be the lamest day of the year, conceptually,” he wrote.