TMZ Photog -- My Mom Popped My Bug Bite with Pliers!

*** LAST CHANCE ... THIS IS DISGUSTING ... PROCEED AT YOUR OWN RISK ***

You're looking at a gargantuan big bite that our photog received during a recent trip to Japan. But instead of going to a doctor, our photog had his MOM treat the bulbous fluid sac ... by popping it with a pair of pliers!

Why did he film it? Can't tell you ... but he did ... and it's super gross.