The actress caught her wife mid-workout - and mid-song - posting the hilarious video to Twitter.
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!
Portia De Rossi took revenge into her own hands after wife Ellen DeGeneres tweeted a video of her getting her sweat on to a classic Jane Fonda workout tape.
Can't a girl do a little @Janefonda Low-Impact workout in peace??! @TheEllenShow IT'S ON!
— Portia de Rossi (@portiaderossi) January 4, 2015
WATCH: Taylor Swift's 'Shake It Off' Is Eerily Perfect With This '80s Aerobics Workout
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." Watch below.
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.
You're pretty brave for someone who likes to do naked pilates. RT @PortiadeRossi: I got you back! Just watch.
https://t.co/vJZ0h5bYMm
— Ellen DeGeneres (@TheEllenShow) January 5, 2015Well, there's something to (maybe) look forward to? What do you think of Ellen and Portia's social media shenanigans? Join the conversation (where else) on Twitter using #ETNow. And if you haven't seen this '80s Aerobics video set to Taylor Swift's 'Shake It Off,' do yourself a favor and watch below.
Follow Sophie on Twitter: @SophieSchillaci