He stopped cutting his hair when we started playing music together -- it gave him a renegade-pirate look. Or maybe it was just an old-hippie-look. But it worked for me - I think bass players should have a slightly rakish persona.
But lopping off his hair was not enough. Craig also trimmed his beard short. So now my husband, who turns 50 in a couple months, looks about 14 years old.
Joe, my smart-mouthed kid said: "It's OK, Mom. If you cut your hair and trim your beard, you'll look younger, too."
UPDATE -
Craig: "It's alright, honey. I'll get one of those shirts with the arrow that says: 'THAT'S NOT MY MOTHER.'"