A girl named Nike was watching from benches near the dressing stalls. She loved this spot as she could catch glances of the dicks that men sported at the urinals. She gasped when she saw Tommy's endowment. At school she wasn't a renowned pervert at all but some of her friends knew what she was really like; 16 years old and having scared off her first boyfriend in 2 weeks with her acts of perversion, libido and sadistic streak. She was good looking with dirty blonde hair and almost orange brown eyes. Her bust was rather lacklustre at smallish B's and she therefore wore pads in her bikini. Her hips however were amazing, she had a thigh gap and her build was slim all over. Though she had mild love handles since she overindulged quite often her body didn't seem to gain much weight.
She followed Tommy silently to his stall then just as he was about to close the door she slipped in. Closed the door behind her and put her hand on his mouth. She pulled his trunks down and grabbed his penis with her free hand. "I'm going to make you feel good." She was taller than him and presumably stronger. Though looking at him she wasn't really sure of that last part as his body at well defined but trim musculature. She pulled him tightly against her from behind. Tommy felt her breasts push against his back. She started giving Tommy a handjob which proved harder than she thought with this much length. Tommy's penis started growing larger as it grew erect. The more erect Tommy became the less he seemed to resist. Nike felt Tommy's head breathing against her hand. Her nipples had become erect. Tommy however couldn't notice it through her bikini's pads while he was distracted by his massive dick, he might not have noticed if he wasn't distracted either, her nipples weren't that big and she did use quite a bit of padding.
Tommy's penis slowly grew more erect. At 13 inches Nike could jerk him off better with his increased girth and harder shaft. Slowly it became even longer. Nike could still get her hand around the shaft but only barely and she had to squeeze pretty hard. It had to be 15 inches now, truly massive. At about 17 inches Tommy's penis stopped growing. His penis could actually hit the side of the stall with it's length if Nike wasn't holding it up. Nike herself was rubbing her chest against Tommy's Neck. Her bikini had slipped up and she could now brush her nipples against him directly. It didn't take long for Tommy to come at full erection. Nike felt pressure build in the massive rod as Tommy came, pushing her fingers further apart. Before Tommy's penis could soften she started rubbing it even more aggressively. Tommy squirmed between her arms. His penis dropped down to 15 inches in length before getting harder again. She made him cum once more. Nike tried to get Tommy hard again but his penis became softer quicker this time. She was a little disappointed.