The act of concieling valuables in one's anus.
Also known as "Buttvaulting"
T-Bone was forced to buttsmuggle cigarettes and other forms of contraband into prison because he needed to purchase his safety from the Arian Brotherhood.
To conceal or hide an item to prevent its detection, especially by the authorities; to steal or shoplift; to keep a secret.
"Jose buttsmuggled the cocaine across the border."