Sex act, BDSM related.
Dominant partner sufficiently restrains submissive partner, and proceeds to open their anus/vagina with a speculum. Tiny cuts are made all ove rthe inside with a razor blade, then the dominant partner ejaculates into the wounds.
So...you wanna come back to my place and shave the zebra?
Oh, no thanks, I'll stand...I've been shaving the zebra.