1 definition by clareds

1. Unnecessarily large excitement over technology/science/anything about which one is a nerd. The mental equivalent of hardon, hard-on
2. A hard-on caused by a new piece of technology
'That new network router has given me a total nerd-on'

'I'm getting such a nerd-on reading about that 14th century architectural movement'

Geek 1: Oh man, this new cooling system has just given me a ten percent boost on 3Dmark.
Geek 2: Stop, You're giving me a nerd-on
by clareds March 18, 2005
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