A nog, apart from being any of several actual tangible things, is an abstract expression, availible only to virtual bodies. One may 'nog' another, 'nog' oneself, or 'nog' at a place, idea, or thing. Since a nog has no real-world equivalent, it is entirely subjective in nature.

Example: JoeShmo nogs to JohnDoe. He must feel special?

This can be taken positively (:)) or negatively (:(), as an affirmation or as an insult. The interpretation is entirely dependent on the individual being nogged.