A funny video has emerged of a young boy going on his first roller coaster ride with his father.

The footage, shot on Tuesday in Oklahoma City, OK, USA, shows the boy screaming as the ride starts while his dad is laughing "hysterically".

After the first go, the boy is really enthusiastic but when the ride goes unexpectedly backwards he becomes scared and says he never wants to do it again.

A father and son have just arrived at an amusement park, and the father takes the boy on a roller coaster with a loop, and he has never been on one before. The ride takes off, and the father laughs hysterically as the boy screams at the top of his lungs. At first, he thinks the ride was awesome, as he believed it to have ended, and then the ride goes backwards with the same scream while the dad laughs. The boy changes his mind and says he never wants to ride it again.