An exclamation of which its origins lead to a middle school in Seattle, WA. On a school camping trip, they kids swore so much that the teacher, (Tom) trold them they could only say one swear word. They chose "Fucking A' Tom was later addded.
by shmerd October 17, 2008
An exclamation of unhappiness. Often used when supremely pissed off. While fucking a is generally a good thing (meaning fucking amazing), this is a bad thing.
by MuZ1 February 17, 2009