Chris Brown musta been on something serious last night, he outta no where decided to post a pic of him eating booty on his Instagram!! LOL It's rumored to be Karrueche, but who really knows, all we can see is booty cheeks. He quickly deleted the pic..but not before I could get a screenshot of it!!!! 

Even though I screenshotted it, I can't post it for legal reasons :( So, instead..

CLICK HERE to see the pic!

Getty Images/MTO