When talking to boys you got to be obvious....
I don't dance ballroom either, but I do dance blues, and sometimes you feel it...hard or not and no matter the size. The more experienced dancers can dance through it and not notice, and it doesn't necessarily mean something is being done wrong. Beginner dancers, and those who are part-timers at it, tend to notice and be more uncomfortable with it.
Really it's no different than an ABG (Accidental boob grab), some times you're doing a spin and to bring back to closed quickly and keep connection, a guys hand may graze...it happens. A follow can tell when it's just part of the dance or when it's intentional.
Same goes for crotch moves. RandomMysh knows what I'm talking about as our WCS dancers in NYC make fun of them all the time. Two hand hold moves than involve a lot of movement downwards, sometimes the hands graze his package. It happens.
We like to joke around and see how obvious and how many ways we can do them all, but they're jokes among friends, not something we'd ever do with people outside our small tight circle of friends. And like I mentioned with ABG's you can tell when they are ovgious, and therefore creepy. You don't want to dance with these people again. But in the course of a regular dance, those who dance regularly and constantly don't notice them.