Amanda Bynes decided to continue her strange and erratic behavior today, and this time set her sights on Rihanna.
Seemingly unprovoked Bynes tweeted the following:
Rihanna decided to respond briefly and Bynes fired right back.
All of this comes just days after being arrested for alleged drug use and showing up in court wearing a ratty blonde wig. Let's hope some court ordered rehab and psychologist visits are in order.