The Milwaukee Bucks’ roller-coaster start to the 2023-24 season took a rather nasty turn this week.

The team’s latest setback came on Wednesday, when they were embarrassed by the Raptors in Toronto, 130-111. Sadly, it appears as though the final score wasn’t the only embarrassment suffered by the Bucks on that night.

Social media detectives noticed something nasty going on inside the pants of Bucks star Brooks Lopez at one point in the game.

While taking a free throw, some couldn’t help but notice the brown stain on the back of the center’s shorts.

In other sports, you might be able to suggest that’s a grass or dirt stain, but there ain’t no grass or dirt on a basketball court!

Here’s what social media was saying about it:

This is actually insane bro wth

— Ethan – uɐɥʇƎ? (@ethannnnnnnn23) November 2, 2023

The loss dropped the Bucks to 2-2. It’s a disappointing start after the club acquired superstar Damian Lillard just before the start of the season. They’ll look to clean things up (figuratively and literally) and capture their second title in four years.