(nsfw) Moana Lisa.

(click image) The world will never know what her smile was hiding, but the people of Praga, Poland (update: a tipster says this is in Prague, not Praga as was noted at the source) now have been given a speculative glimpse of what her dress was hiding, thanks to this stark billboard. Advertiser unknown. I don't think it's related to the Pyrocool (fire extinguisher systems) sign above it (via). Previously in Mona Lisavertising: Arby's Mona Greasa. Rock's Aroma Festival: Mona installation made of 4,000 cups of coffee.