The Incredibles: Dash's Sissy Punishment (Private with Chancellor Castro)

"Do not put that crap on me!" Dash shouted. His struggling managed to break his restraints and he used he attempted to use his speed to get away. He quickly found out thay he couldnt use his speed to get away.

[Bellhart]

Mrs Parr had underestimated how much her son's strength and superpowers had grown in recent years, so she was taken aback when he managed to slip out of the restraints.

"Oh no you don't mister!" She said, extending and arm and bringing the lanky teenager back to the changing table, swiftly putting the restraints back on him.

"Now lets try this again shall we Dashie? You're nineteen years old, and you still leave skidmarks in your underwear and dribble pee all over the floor in the bathroom, so some time in a pair of thick, crinkly diapers can do you some good!" She lectured him as she finished powdering him and once again slid the pink princess themed diaper underneath his rear.

Dash began to fuss and cry a little but ad the diaper was placed under him. He couldnt move a bit due to being restrained again. "Mom stop this is too far!" He protested. The lock of his chastity cage clacked against his cage loudly. The grown speedster kept struggling as much as he could.