To get an erection from non-sexual/strange/unusual stimulii.
Playing scrabble always gave John a huge weirdon.

erection weird hardon scrabble
by drhooss February 8, 2015
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n. what occurs when something weird is happening and you just can't keep it contained.
"Dude! You just gave me the biggest weirdon!"
by rye won't you? July 6, 2005
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