Identical twins, both gay and curious, find themselves alone in their apartment with nothing but each other for company. They start by stripping down and exploring each other's bodies, feeling the similarities and differences. One twin takes the lead, lubing up his hand and slowly inserting a finger into his brother's virgin ass. The recipient moans in pleasure, pushing back against the intrusion. The twins get more adventurous, with both hands fisting each other's tight holes, stretching them wide. They grunt and groan, lost in the intense sensation of being filled so completely.