1 definition by Drexelsage

Top Definition
the state a guy gets when sexually aroused; penis fills with blood and stands straight up and often makes a bulge through pants; boxers, etc. especially embarrasing for teenage boys who are turned on frequently and can't seem to control their boners
She was so hot that I popped a stiffie right there in class.
by Drexelsage January 02, 2004

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