Now this is a prank war we can get behind.
It's Ellen vs. Portia in the battle of the embarrassing workout videos - and Portia has the upper hand!
Shots fired! Portia delivered on her promise on Monday by posting a sneaky video of Ellen mid-workout on the treadmill, singing along to Mark Ronson and Bruno Mars' "Uptown Funk."
Something tells us this battle is far from over. Ellen re-tweeted the embarrassing video and suggested that something a little more risqué might be on the way.