I like to find lines with young women as cashiers. I find that they generally dont care what I am buying, as they are probably too wrapped up in their own personal world to worry about mine.
Checking out in a line with a male cashier is an absolute NO NO! I wont do it.
I have bought everything from lingerie, shoes, to makeup and a wedding dress! Strangely, I have never bought a wig. I should do that.