What is Atfud?
Ask The Fucking Urban Dictionary. A declination of ATFG, most likely used for words that n00bs don't know.
g33k: roflmaostcshfootwabhnafitgcad
n00b: OMG WTF IZ TAHT WORD?!
g33k: ATFUD
See rofl, urban dictionary, google, g33k