sexual mileage, sexual longevity
"Jane, why don't you break up with Steve?" said Helen.
"Not just yet, he still has a few months good humpageleft in him" replied Jane.
1) To rape another for unkown reasons.
2) To have mindless, sweaty sex in quick progression, usually has to do with the female anal canal.
3) To hump!!
Bob had humpage with Sally and Sue, and when they were done, they were sweaty and heavily breathing.