Passionate 24

A 24 hour period in which two individuals engage in intimate, friendly and most often, sexual activities without a sealed commitment, unless the 'passionate 24' becomes a scheduled event. A lot of times, it is nothing serious, just filling human needs without commitment so if things move ahead or all contact is aborted afterwards, there's no hard feelings and clear understanding.

Girl 1: I really need a Passionate 24 right now, hopefully with Isaiah."
Girl 2: I need one too, hopefully it can help Mike and I decide if we're just friends or more than that.