Swinging is a lifestyle, where you, as a couple, have a sexual relationship or an erotic contact with another (straight) couple. It is also called recreational, social sex. You can swing at a swing party, in a couples club, but also during a home date.
You can find swingers in all age categories, in all levels of society and at all educational levels.
Have a look at the menu Swinging or read the interview Swingers Funclub had with Louise and Jacques for more interesting information on swinging ...