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1.
A mix between "Geeky" and "Nerdy."

It is the ultimate way of saying anything is nerdy/geeky.
Look at that gerdy guy across the street. Look at how he's carrying his trumpet over his shoulder and wearing a bandanna. What kind of mix is that? Band geek and gangsta nerd?
by foshizznet my nizzet July 14, 2006
 
2.
A short fatass fugly women who is loved by bisexual losers
WOH!! LOOK AT THAT GERDY!!! SHES SO UGLY!! ONLY A LOSER WOULD LIKE HER!!
by SkiSki6969 January 31, 2011
 
3.
A meatball headed character who is rarely seen expressing his own views
Look at that gerdy he's really being non-commital
by Craiggy K June 22, 2006