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]
(..) - Yeah? - That's true. - Can I ask you something, Travis? - Sure. What is the one thing about this country that bugs you the most? Well, I don't know. I don't follow political issues that closely. There must be something. Whatever it is, you should clean up this city here... (..)1976 Taxi Driver