It means someone is really interested in something and can't talk or think about anything else. It usually means hobbies.
Yes, a black bug has bitten me before.
"To bug" in this sense means "to bother." It means "stop bothering me."
A person with a bug bite.
Bug Spray
It means you find out that something you thought was a good thing turns out to be a bad thing; usually at the worst possible time.(such as after you've bitten into the apple)
Yes, have you been bitten by a small black bug recently and do you have a mark from it?
He obviosuly has got it bad for you, looks like he's been bitten by a bug alright- the love bug!
Project Runway All Stars - 2012 Bitten by the Fashion Bug 3-2 was released on: USA: 31 October 2013
dog bug tiger lion eagle shark cat
Some people do not itch when bitten by mosquitoes or other bugs. It depends on if the person is sensitive to the saliva of the bug.
It's not really an idiom. It means "what are you thinking about."
RFP is not an idiom. It's an abbreviation.