[Ensign Steve]

Originally Posted by The Man

My Vagina Is Terrific. Your Opinion About It Is Not. - The New York Times

That is what I have decided to name a collective of mansplainers. A murder of crows, a parliament of owls, a rash of mansplainers. In medicine a rash can be a mild annoyance that goes away and never returns. A rash can also portend a serious medical condition, even something malignant.

I have also heard "an actually of mainsplainers" suggested.

Note, I'm specifically not actuallying the author, just offering an another option I have heard.