Demi Lovato is not to be messed with!
“When you kick bae’s ass #jiujitsu @bombatuf,” Demi captioned the clip.
They start off with a hand slap and fist bump before Demi promptly tackles and pins Guilherme to the ground.
The cutest part comes at the very end, though – watch below!
Demi also showed off her figure in a skin-tight catsuit earlier this week. Click inside to see the pic…