A Disco Poo is when you got to the toilet with your i-phone or i-pod on loud and play disco music whilst in a cubicle, doing your business. The more public the venue, the better, although you shouldn't be in a club or location where music overshadows your top tunes.
When you poop and forget to whipe so it drys in your butt cheeks and you finally aggressively pull the cheeks apart and the poop stays straight in the shape of a disc