Pilot slang. Being unable to take one's eyes off a target(enemy aircraft, escort package or some fine lady in a bar) for fear one will not be able to find it again.
Billy : ''Hey Johny, come and watch the game with us over here''
Johny: ''No way dude, I padlocked Ginger''
A person obsessed with looking up current topics and words in wikipedia. Mainly for the thrill of seeing a padlock and saying to oneself... "Dam, that must be one heated topic"