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Similar to a stealth bomber, this is when a male attempts to hide his erection from others. Depending on the intensity of the erection, the size of the male's penis, and the clothes he is wearing, the male may go about a stealth boner in several ways:the most common is to stick his penis upwardly flat against his abdomen using his pants to hold it down. If the erection is only mild in intensity, he may try and hold the erection against his thigh in his pant leg. Attempting to have a stealth boner is exponentially more difficult whilst wearing gym shorts and/or no shirt. Most men grow increasingly adept at using stealth boners since the onset of puberty.
Mike 2: Dude I gotta go talk to one of the director's but that hot audit chick gave me a raging stiffy...what do I do???
Mike 1: Just walk in with a stealth boner dumbass!
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