Song title for a 90's dance club mix about a menage trios?

The only lyric i know is " baby I'm down with menage trios so come on." It came out in the late 90's . I believe a man and woman are singing it to each other. almost like he's asking her fto do a . LOL its just something that popped onto my head that i'll go crazy if i don't figure out, thank you in advanced.