Mike’s Lexicon: Spontenudity

Spontenudity (noun): pertaining to the gleeful and impulsive propensity for small children to shuck all clothing with little or no motivation at all. This generally occurs at the time and place which causes the parents the maximum amount of mortification.

Note: This behavior is sometimes seen in adults, especially males, at sporting events or other locations where copious amounts of alcohol are consumed. In adults it is also known as spontestupidity.