Here are some I can think of:
TAFFARD- Take A Flying Fuck At a Rolling Doughnut
YCTFS- You Can't Type For Shit
NFJ- Nice Fucking Job (used sarcastically)
TNJ- There's No Justice
GOMAD- Get Off My Arse Damnit
DAMHIKIJD- Don't Ask Me How I Know, I Just Do.
D&W- Ducking & Weaving
DUCWIC- Do you see what I see?
WAG- Wildass Guess (does anyone remember this from NTN Trivia on the old ImagiNation Network before AOL ate it alive?)
GD&RVF- Grinning ducking & running very fast
FDROTFL- Falls down, rolls on the floor laughing
FIGJAM- Fuck I'm Good, Just Ask Me
TABA- Tosses a Beer at
PEBCAK- Problem Exists Between Chair & Keyboard
IARTPFWTSIOWIM
- I Am Repeating This Parrot Fashion Without The Slightest
Idea Of What It Means