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Your stomach, but it's the worst one. It’s shaped like a J, which is the dumbest letter to pick for a sac. It's like the J chose you, not the other way around.
My j sac is so full I can't breathe. I ate a whole pizza and a bag of chips.
I'm gonna die from my j sac. It's like it's trying to take over my body.
My j sac is louder than my mom's yelling. It's making noise like a bag of coins.