Creative Acts of Vandalism by French Artist CAL Studies show this post gets funnier when shared at midnight. (Totally made-up studies) Facebook Pinterest Twitter Email Tumblr Reddit Flipboard Copy Link French artist Cal creates brilliant acts of vandalism. The works of the Lyon-based street artist are smart, joyful, and creative. More info: Instagram Studies show this post gets funnier when shared at midnight. (Totally made-up studies) Facebook Pinterest Twitter Email Tumblr Reddit Flipboard Copy Link