1) To be struck with an obvious answer or response, when asking a question (usually with implied connotations).
2) To get an unintended answer.
Bob: Hey George, how do you make your long distance calls? (really asking if he used a calling card or etc.)
George: The telephone.
"Bob was fonged."
To fong something means to post it on social media and then delete it.
The usage of this word comes from the social media behavior of Gary Fong, a "rockstar" of the photography world and the creator of a line of photography products, such as the Gary Fong Puffer (a device to soften your on camera flash). He is known for weighing in on a variety of topics from the photography world to the economy. He frequently posts status updates on Facebook or posts comments on Twitter, which mysteriously disappear after a short period of time (from a few hours to a few days.)
Jody: "Did you see that status update Jane posted last night? She really slammed Dave's behavior."
Mary: "It seems to be gone now. She must have fonged it."
to get screwed over, not to be confused with to get screwed or laid
Friend 1: Hey, did you have a good weekend with your girlfriend?
Friend 2: Nah, I got fong'ed over.