A gender reveal party is supposed to be a moment of happiness and excitement. Bring a B1G rivalry into the mix and it might take an awkward turn.

One couple experienced that uncomfortable feeling during their gender reveal party and the reaction is going viral.

In a video posted to TikTok and shared by SportsCenter, a couple got quite the surprise when it opened a Michigan/Michigan State-themed box, hoping to learn the gender of the little one on the way.

Slowly but sure, the balloons floated of the box to reveal … a bouquet of Ohio State-themed balloons. As you can tell in the video below, the father was less-than-thrilled with the prank:

He hasn’t been that upset since Kenneth Walker III rushed for 197 yards and 5 touchdowns in Michigan State’s 37-33 win over Michigan.

The prank was meant to be in good fun. It seems that most invited to the event got a pretty good laugh out of it. But it also doesn’t appear that Dad will be too pleased if there’s a little Buckeye fan running around the house.