Birthday Sex is an Easy Present

"I may not have a cake, but I've got a different present for you." Lance offered, crawling onto the bed and sticking his ass out for Hunk, and god, the thickness of his butt in proportion to the rest of his body was unbelievable.

Hunk's body was very quickly reacting to the scene before him, but he wasn't sure what active action to take. There were two obvious choices; he could go with the flow, or question everything. He seemed to subconsciously choose both.