i don't think she can do it. the numbers just don't work. four minutes for one man is within the realm of possibility, but there are logistical challenges to line up that many quick shots who can maintain under these conditions and hot-swapping them without losing too much time, especially as you haven't budgeted any time for cleanup between uses. if she uses her two hands as well things become more manageable, but i doubt she'd be able to keep up the pace. even performing fellatio that long seems impossible to me. a symbolic act with a single vaginal thrust or kiss on the tip is the only way i can think of to solve the problem, and that's stretching the definition of "slept with" to the breaking point.
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