A combination of stupid (see. "stupid") and funny (see. "funny") that describes the event as both idiotic and humourous allowing each to interact together on an equal basis but do not detract from the overall events.
The "pineapple episode" last night of "How I Met Your Mother" was incredibly stunny.
Created by rapped 519Mid located in KW- Ontario Canada. Stunny is another word used for money, bag, bread or dollars. In the interview he stated he made it to stand out from everyone using the same lingo. Plural for Stunny is Stunnys.