For example, the nose-picking thing is a super-duper big turnoff. Feel free to do it in private (and by private I mean a locked bedroom or bathroom) but DO NOT talk about it. This is not a topic civilized people touch in polite conversation.
I suspect that the terms "civilized people" and "polite conversation" elicited a snort from you, and that is precisely what I mean by polishing. These things are not dirty words, and you wouldn't be selling out if you did them.
The one who buggers a fire burns his penis
-anonymous graffiti in the basilica at Pompeii