horizontal mambo

slang The act of sex, especially sexual intercourse. My brother spends his weekends cruising the bars around town in hopes of doing the horizontal mambo with someone. A: "I know you guys left together, so did you do the horizontal mambo or what?" B: "Ew! No! Bobby and I are just friends." A: "So when are you gonna tell Marcy that you've done the horizontal mambo wth her new boyfriend?" B: "Would you shut up? That was a long time ago, and no one needs to know about it!"