Backdoor Paintbrush
When you take a shit, it hits the toilet bowl and falls forward painting the back of your nutsack.
Lil Aiden was taking a shit in his old baby toilet hot Cheeto edition because his moms was streaming her only fans in the bathroom, when because of the no water in the toilet he took a grumper that hit the bottom of the toilet bowl and fell forward painting the back of his nutsack. Therefore a backdoor paintbrush