The duo, who were at a theme park in Oklahoma, US, both looked like they were having the time of their lives when the rollercoaster started.
The boy even shouted the ride was "freaking fun" after they whirled around the first loop.
But things soon took a turn for the worse.
Halfway through the ride, the rollercoaster changed direction and started to move backwards.
And the boy was not happy.
His words when the ride finished?
"That scared the freaking crap out of me! Never, ever again."