Bynes tweeted the below at Rihanna, then quickly deleted it. TMZ thankfully, was ever-vigilant: "Chris brown beat you because you're not pretty enough," and then, "no one wants to be your lover so you call everyone and their mother that I almost named my dog Rihanna."
And then Rihanna decided to engage with Bynes, and pretty beautifully shot her down:
Ya see what happens when they cancel Intervention?— Rihanna (@rihanna) May 26, 2013
Which threw Bynes into a rage, where she tweeted (and quickly deleted), "@rihanna unlike ur fugly faced self I don't do drugs! U need the intervention dog! I met ur ugly face in person! U aren't pretty u know it!"