Demi Lovato Kicks Boyfriend Guilherme 'Bomba' Vasconcelos' Butt! (Video)

Demi Lovato is not to be messed with!

The “Body Say” singer took to Instagram on Friday (February 17) to show fans a fight she got into with her boyfriend Guilherme “Bomba” Vasconcelos during jiu-jitsu practice.

PHOTOS: Check out the latest pics of Demi Lovato

“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!

ICYMI, Joe Jonas recently called Guilherme a “good guy.”

Demi also showed off her figure in a skin-tight catsuit earlier this week. Click inside to see the pic…