Honestly I’m sure it can’t be that bad, but if it really makes you uncomfortable then just make sure they aren’t hitting it from the back that’s really the only time they’ll see it. But really i don’t think any guy would be bothered by it they’re just happy you’re giving them attention in the first place most of the time and if he is bothered by it he probably has a small fucked up dick anyways bc those are the only ones that are insecure enough to have a stick up their ass