O RLY?
1). Become a misogynist. Since you are on Newgrounds asking these questions in the first place, the evidence suggests that such a thing would not be a hard transition.
2). Become a dick. You have one, and you could just go ahead and use it. Try driving into school some day with your car sub thumping and yelling, "Hey ladies, look at my dick!" The ladies will flock to you, I guarantee it.
3). Accept that everybody gets boners, even babies. Really. If an innocent little child that can't even manage to do more than scream and sleep can get a boner, you can be at peace with yourself for having one.
4). Buy an alarm and set a tripwire on your dick. After a few embarrassing encounters with the dick alarm, you probably will not be able to get a boner for the next several years without pangs of fear first.