He gave Mark a blowjob

A strange desire built up inside of John as he saw the erect dick of his friend. He knew that desire and couldn't help it. He knelt on the floor and took the dick into his small hand. He licked over his red painted lips as he gently stroked it to make it a little harder. Then he wrapped them around the tip and began sucking. From above Mark saw how the plump red lips of the blond woman were moving up and down his hardening cock. Her mouth felt fantastic, like it was made for blowjobs. John took Mark's full cock into his mouth and while sucking licked it with his tongue. He was totally into it and didn't noticed his own penis getting erect inside his lacy panties. Instead he moved one of his hands to his chest and shoved it into the bustier's cup. His hand sink into his soft breast and gently squeezed it. A sudden shock ran through his body as his fingers touched his erect nipple. But that didn't stop him. He continued to play with his breast while he sucked on his friends cock.

After a few minutes Mark came. His cum shot into John's mouth. John couldn't help but swallow it. Warm creamy stuff filled his mouth and he swallowed it like it was a drink. Before, when he was blowing his father, John didn't liked the taste of cum. But now he somehow was alright with it. He swallowed the last drop and let the hard cock covered in his saliva and Mark's cum slide out of his plump red lips. But despite Mark just came, his cock wasn't getting softer, and neither were John's.