Weezer's post reminded me of:
BUFF - Big Ugly Fat Feller
SLUF - Short Little Ugly Feller
..and I seem to remember a couple of nicknames particular to people who might allegedly at one time or another have worked with the AAC:
OVLOV - 'cos that's what was imprinted on his face after the truck hit him (more truth than rumour)
CLANG - 'cos that's the sound the spade made when it hit her face