They've been trying to work/get the 'bugs' out of the system. [=trying to fix the system's problems]
He was first bitten by 'the' acting 'bug' [=he first became interested in acting] when he was 18.
Her legs were covered in 'bug' bites. [=itchy or painful wounds from insects]
(..) Some kind ot a champ or something? No. l thought you were the champ. You want to bet? Bet on what? One week. l bet in one week l can put a bug so tar up her ass... ...she won't know whether to shit or wind her wrist watch. What do you say to that? Want to bet? Do you want to bet? (..)1975 One Flew Over the Cuckoo's Nest