Hiding in the restroom.

Liz was now at sprinting speed, exhausting her immensely but was too concerned about getting finished to notice as she took the lead, tearing through the rest of the run in record time. Out of breath, she desperately asked to use the rest room while the other were finishing, and by the looks of it she had a good 7 to 10 minutes before the last of them were done. She swiftly stole into a bathroom stall and peeled down her sweaty clothes.

“Wow” quietly left her lips as she stared at her crotch. Her cock and balls looked to be bigger beeing just under average size for a boy her age. However, most boys her age were at least a foot taller than her or taller, so her penis looked large for her size. Her erect penis was almost four inches long, and a vein ran through the side. She was getting hotter just looking at it.

She could now wrap her hand around it, and moaned as she squeezed it. Liz began to properly jack off for the first time, and her body began to jerk at the immense pleasure of it. Not after long did she start to feel the beginnings of her orgasm causing her body to start heavily shiver, and letting out a long drawn out moan she shot her wad at the stall door.