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]
(..) even if you prove that he didn't commit a crime? I'm not much on rear window ethics. Of course, they can do the same thing to me, watch me like a bug under a glass if they want to. Jeff, you know if someone came in here, they wouldn't believe what they'd see. What? (..)1954 Rear Window