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1.
over-sexually zealous nerd who doesn't get any, usually because they spend massive amounts of time on the internet
" You're such a sextoid."
"I am not! My online girlfriend doesn't think so!You're just jealous because I've been talking to hot babes online all day"
by ben dober November 05, 2005
 
2.
a singular muscle term that relates to every muscle in your body as a whole.
I worked out my whole body yesterday, now my sextoid is sore.
by Phillip Allen December 26, 2007