look up any word, like lemonparty:
 
2.
a terrible, thumber downer person
DERFY, you thumbed me down! again!
by churmisturg January 04, 2011
 
1.
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 06, 2004
 
3.
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