Anything that tastes like it has a gritty, rough grainy or sand-like feeling, inside your mouth when you're eating, & you have to spit it out right away.
Jimmy spit out his lima beans after eating them because they had a gross, pethy feeling when he chewed them up.
When somebody blows a really sloppy fart, that sounds so loud and so wet, that it sounds like a pig's deep-mud snorting.
"After he ate 10 out of the 20 cabbage rolls, his *wet-booty-a'slappin' * sounded like he had major piggy butt!"