You're already an astronaut. No one cares how big it is. You already win.
Everyone knows the male ego is fragile, especially when it comes to the size of their Cyclops. You know, their Sonic Screwdriver. Earthworm Jim. Whatever you call it, this rule applies to all guys; especially, apparently, to NASA astronauts, who were so concerned about the size of their Bilbo Bagginses that their own spacesuits suffered.