Mama June -- I Can't Stomach My Stomach ... I'm Getting a Lap-Band

Mama June is joining a band ... in her lap.

The 'Honey Boo Boo' matriarch is so inspired by her recent 45 lb. weight loss, she's gunning to lose another 50, with the help of the Lap-Band.

We did the math ... she currently weighs in at 276 lbs., and if she achieves her gastric goal she'll go down to a svelte 226.

June made the decision to go under the knife because she's plateaued with her trainer and her relatively healthy diet.

She'll have the surgery this summer, which means she'll just miss bikini season.