A method of checking in and following your partners comfort levels during sex. Reaffirms consent and is often used in kinky settings or when exploring sexuality.
Green - You're comfortable.
Yellow - Slow down, pause, or change something (negotiable).
Red - Stop.
"Have you heard of the traffic light system? Can we use that? I don't wanna hurt you."
- "I'd like that."
"What's your colour baby?"
- "Yellow -- can we switch positions?"
"Of course."