A noun used to describe something ugly, rotten, dirty or smelly.
I walked in to see a mess of derfis all over the kitchen.
by Rebel July 19, 2003
Get the Derfis mug.
DERFY, you thumbed me down! again!
by churmisturg January 4, 2011
Get the DERFY mug.
An idiot from Alabama, who is "Bi-curious" but we all know just loves the man rod. Often lusting after Josh.
You act just like that moron Derfy, you southern hick.
by srd April 7, 2004
Get the derfy mug.
an Alabama youth. often red neck in nature as far as capabilities. considered to be a "geek", but lacks actual abilities in regard to high tech. can also be confused with fred spelled backwards with a fancy "y" added for stupidity
get away from that before you break it like a derfy
by turtle humper 2006 May 19, 2006
Get the derfy mug.
a phrase that you can tell some one when they are being so perfect. since you don't feel like using the whole word "perfect" you use this phrase.

can also describe a human being/inanimate object and can replace someone's name.
i just ate a thousand candy bars.
omygod. that's so perfy derfy.

hey looks it's perfy derfy!
where?!?!
over there! by the perfy derfy mailbox.
wow. such a perfy derfy.
by perfyderfy queen. February 10, 2011
Get the perfy derfy mug.