High-risk physical targets and/or interaction in a public context at a bus in a city with potential ‘bystander audience’

A man and woman ride a crowded city bus and decide to go all the way. With her small and perky body figure accompanied by large boobs, the man’s thrill-seeking girlfriend gladly oral sex him with other people around. She loudly makes love with him and their passionate scene causes a spark on the bus, no one can deny their sexual passions.