Does he wear the kind that come up to his armpits (or something) or is he a deformed goon? (tell him somebody asked you online if he was a deformed goon-- he may get a kick out of it).
Walmart sells to fat people. (i should know). But Big and Tall is a store all it's own (I've know that since the '60's. I have some huge relatives/forebears/ancestry. Must be the Belgian/Dutch component)
But the #1 reason Target carries bigfoot sock sizes?
#2 Son is a bear under semi-human appearance. He has gigantic feet, and our local Walmart does not sell the athletic socks he likes in his immensely-large size. (He’s not deformed, just a giant ;-).