eiffel towerのようなどんな単語でも探してください。
 
1.
Bareback swingers are people who indulge in recreational sex swinging without the use of a condom.

The term bareback originates from the gay scene where the use of the term bareback sex was/is slang for sex without a condom.
Couple want to meet other couples for bareback sex.

Bareback swingers enjoy the feeling of sex without a condom.
Dirty Davidによって 2006年07月03日(月)