1 definition by mynameisjul

Top Definition
a man gets a boner when he gets sexually excited about something.

His penus goes erect and sticks up
he can vene start shaking because of the loss of control
geogrpahy teacher: that girl is hot
hot girl: hey mr.

geography teacher: aaaaaahh OH MY DAIIZ! STOP IVE GOT A BONER
hot girl: :$
by mynameisjul May 20, 2009

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