hard-on

Man's most magnificently majestic manifestation of masculinity, and the one potentially most exciting to a woman. It looks like a rocket ready to be launched, and has the same turbulent thrusting force and energy. It signals to a woman that a guy is ready and able to have sex with her and eager to do so, which, if she finds him attractive, tends to kindle her interest. For that reason, it is a serious though common mistake for a guy to be embarrassed or self-conscious when he has an erection.