When a group of friends go out to shoot up cans, boxes, old tv's and such as a form of entertainment by using a bump stock on your gun or by simply putting your thumb in your jeans change pocket and your pointer finger on the trigger. When you pull forward on your gun it causes it to shoot rapid fire. Clearly a waste of ammo but a bunch of fun.
Me and the boys went Bumpstocking by the old Mitchell place last night and lit up Cooter's old Dodge.
A trip to a grocery store, convenience store, or gas station for the sole purpose of buying an excessive amount of junk food and sugary drinks, usually with friends. A chud run often happens late at night and ends with everyone involved hating themselves afterwards.