He's peed in a bucket (and who knows where else!), but this time Justin Bieber caught our attention when he rushed into a public restroom in Los Angeles on Wednesday. Hey -- when you gotta go, you gotta go!

The 20-year-old pop star was cruising around LA with his entourage, and we're not sure if he misjudged the size of his bladder or had something worse going on (a bad taco Tuesday, perhaps?), but he definitely hightailed it in to the potty at a local gas station.

On the plus side, his pants were already sagged so low, they must have been pretty easy to get off on a hurry...