To the guys out there (or women, if you know for sure)... what do you think the statement "Couples are fine with me, but that's a whole other ball game. (Put me in Coach!)" would mean? This is a statement on a personals type website.
Sounds like someone is interested in meeting up with couples. I would assume for sex. Either with both people in the couple (the man and woman) or with the woman while the man watched. But I'd take it that way.
From the way it's written I would take it as the person hadn't had expiriences like that before, but is ready and willing to.