He changed before we left the office. I went into the locker room and changed and met him out on the floor. After about 90 minutes we call it quits. I headed to the locker room and he said he'd wait for me, that "I'll shower when I get home."
I told him I didn't want my car smelling like a sweaty jockstrap and made him go out to the car for his clothes and go in to shower. I've never seen anyone so nervous. I leaned in asked him what his problem was. "Everyone's gonna be looking at my dick. What if I get a boner?" I said "everyone gets wood in the shower and everyone looks, so what?"
I knew he was packing, but oh my fucking god I've never seen anything so big. And, yeah, he popped a bit of a boner, but nobody said a single thing. Well, he pouted the whole way home and now he says he won't go unless he doesn't have to go into the locker room. How can I convince him he has nothing to worry about?"
Guys who are hung like him no doubt got teased to death in school. So, of course he'd be nervous about being in a locker room again. I hope you understand that and show the dude a little sympathy.
That said, I don't blame you for requiring him to shower before climbing into your car. Sweat has a penchant for permeating everything - particularly ass-crack and ball sweat. After a while it can be overpowering.
While a boner doesn't happen with every shower, it is fairly common. Semi-hard-on's typically abound. Adults understand this. You could certainly point out that no one made any comments.
As far as the size of his genitals? Once he's gone a few times and realizes he's not among a bunch of sadistic teens, he's among adults who, granted, are going to look but most likely won't say anything, it will get easier.
Any suggestions, Readers?