When you tie a rubber band to your dick, and then attach the other end of the rubber band to your sock, so your dick is in a constant state of extension, overtime this will enlarge one’s cock.
That one friend or co worker you have that some how never has socks on. He doesn't have socks on because it doesn't matter what time of day it is, if his nob is throbbing he's grab a sock for a good wank. Any time, anywhere, any sock.