Speaking as a male myself, I definitely felt shy and self-conscious buying condoms, like the cashier was staring at me and might scold me. "YOU CAN'T BUY CONDOMS IN HERE! YOU'RE JUST A DORKY KID!" We may be afraid of being told our penises are too small, our muscles are too weak, we have no game, we're not self-confident enough, we're not experienced enough, etc. and that's very real. But in this particular context - buying condoms - there was also this sense of pride. Like, "Yeah, you're jealous. You wish you were fucking my girlfriend later instead of working at Walgreens." I can't know this but I feel like if I were a woman there would have been an added layer of self-consciousness instead. I might be afraid a male cashier would think, "Can I fuck you? How many people have you fucked? How are you going to be fucked? How have you been fucked in the past?" Or they might think, "Why aren't you saving yourself for your husband? Are you diseased? Are you going to become a pregnant single mother? Why can't you females just keep your legs together?" (I'm less sure what they're afraid of a female cashier thinking.) In this one particular scenario - buying condoms - I'd still much rather be a guy.