gastipation

Condition in which your excretion of gas is infrequent and/or difficult. Constipation of farts.

My stomach hurts. I think I'm suffering from gastipation.

Gastipated

It’s when you have gas but it won’t come out

I have to fart but I can’t, I think I’m gastipated

Gastipation

When you really have to fart but just can't push one out.

Bro 1: Dude, why you eating all those beans?
Bro2: I have gastipation. I need to blow wind but can't!