1: noun, Something made by the more festive Christian Nudists. Unlike most Christians, however, Nudist Christians don't leave the nakedtivity up after dark. This is mostly to to the harsh temperatures of winter.
2: adjective, When something you have seen involving nakedness leaves a lasting mental scarring.
1a) It's a good thing Bill and Shelly just had a kid. Now we have a baby Jesus for this years Nakedtivity.
1b) "Okay, people, its 5:30pm Nakedtivity duties are suspended until 11:30 tomorrow morning."
2) I just got back from swimming at the YMCA. No matter how fast I ran through the shower I couldn't avoid the nakedtivity.