east carolina mudslide
When you leave the toilet lid down and then you let out a dump so powerful that your ass cheeks slip and slide around like they're on a muddy hill, and you end up flying off the toilet like a rocket and landing in a big pile of your own poop on the floor.
My dad did a mudslide during a dinner party and we all had to eat in the kitchen.
I did a mudslide and my brother took a video and posted it on TikTok.
My friend did a mudslide in the middle of a test and got a zero.