Uh Oh! Justin Bieber Caught With A Strange Wet Spot On His Pants

An oblivious Justin Bieber was photographed walking in West Hollywood with a mysterious stain on his pants.

Just after leaving Earthbar with a green smoothie in hand, Bieber was spotted with a large wet spot on his sweatpants.

Is that what we think it is?

The "Love Yourself" singer kept his eyes on his phone as he walked to his car.

He didn't seem to notice that there was anything on his pants.

What do you think the mystery stain is? Let us know in the comments!