Jerking off a dick with tight balls - Huge cumshot

This girl's perversity knows no bounds. The guy's dick is embedded in a device, and she lubricates the dick very well, jerking the guy off until his dick is very hard. The girl uses both hands to jerk off the dick and then closes the trap on the man's balls by squeezing them. With the balls trapped, she masturbates him vigorously until he ejaculates abundantly. The girl continues to masturbate, and the man shudders as his dick becomes very sensitive.