That's very non-heterosexual-like. These people need to person-up and stop being like vaginas.
Don’t be a pussy doesn’t originally com from slang for genitalia.
The etymology for pussy in this context is a shortening of the word “pusillanimous”.
I have noticed leftists trying to edit online dictionaries to cover for this (as I am far from the first to point it out) but they can’t edit my huge Websters international dictionary from the early seventies.
The poor scholarship here is par for the course at Duke these days.