Basically, this is the sound of a girl/woman's vagina instantly closing and drying up upon hearing something exceedingly technical or nerdy in nature..
Girl: Hi! Watchya been doing today?
Guy: Oh, lots! Did you know that while I was watching the ath0 socket on my router, I saw 6Mbps outbound spike of packets that..
Girl: <FAWUMP>
Guy: Oh shit, I did it again. <SIGH>
Short for Flat Assembler. It was written by Thomasz Grysztar and "is a fast assembly language compiler for the Intel Architecture processors, which does multiple passes to optimize the size of generated machine code. It is self-compilable and versions for different operating systems are provided."
Fasm allows me to put code, data, and imports into the same section of my win32 program!