When you're Justin Bieber and you're tryna go to the gym, it's difficult to just get there without being hounded by people like us -- the paparazzi -- and by soccer moms. Yes, blonde, beautiful young mommy-types were screaming outside the DogPound gym in West Hollywood, on Tuesday, as JB sweated it out inside. Our video will make your day, folks ...

And meanwhile ... Justin STILL doesn't like our photographer's camera!