I know what you've told your boyfriend, that it's okay there's more hair on his posterior than on his head and it makes him cute like a bear, but honestly wouldn't you prefer a clean-shaven backside? Now he can achieve smoothness with the Razorba, pronounced Ra-ZOR-ba. The Razorba is a holder for any standard sized razor and is ergonomically designed for back-shaving without straining the arms.
$69.95 for a set of three razorbas, enough even for the extra-extra-hirsute.