Isn't the world average supposed to be like 4 or slightly under at ~100 mm. Donkey Kong's are like wildly mutated freaks. Porn just needs them because a camera is in the way so diagonosexnastics is required.
It's a rather dumb plot hole IMO. I never met a drummer rocket scientist type. I'm sure they are out there somewhere, but pounding the cervix like a drum is a boring tune fit for an absentee-alpha brain. If that is what a person is interested in – ehh just consider me tiny to maybe make you feel a little better.
If you feel self conscious, become a roadie (bicycle). Everyone says I won't wear the clothes and we all learn the clothes have a solid purposeful reason to exist. A few years of solid riding and you will not give a fuck about how anyone thinks of your junk. If you want to look, go ahead you dirty slut. I don't care if you look or that you are a slut.