Non-Sexual Orgasm. This is a physical, nearly sexual experience, usually happening to females. They pertain to imagination, thoughts, and sometimes Jax on Sons of Anarchy or a really good chocolate bar.
My girlfriend and I were watching Sons of Anarchy last night while eating Klondike bars. Every time Jax came on the screen she would have an NSO. Hell, once when they showed him in the shower, she took a bite of her Klondike and had two NSOs.