That underlining feeling of uncertainty. The smile that sends a slight chill up your spin. The longing lingering looks, that you just catch the end of. The shifty behaviour. Space invasion, carefully masked as something necessary possibly brushing past you in a tight gap. The compliments directed at your subtle style changes. If they're really good you won't even know they're watching you.
Perhaps more spontaneity and variety. Of course female pervs are more appealing to males, in general, than male pervs are appealing to females. I suppose 'semantics' might come into play also. I make a distinction between a "perv" and a "deviant" or a "reprobate". Lady pervs are fun, whereas female 'deviants' or 'reprobates' can damage psyches and stuff. There are lines I will not cross and things I will never condone, of course!
A kind smile, a gentle if somewhat inappropriate touch. Then later, hours spent in solitary masturbation thinking the whole thing through with all the good parts edited in!