Stewy the Unicorn
At first glance, this just looks like a smattering of black paint, like someone just sploshed his paint can at the wall and let it drip, but when you stop paying attention to the black, and actually look at the negative space, a Unicorn appears.
I first saw this on a wall in the Dalston Kingsland area, but didn’t photograph it because I’m a raging idiot. This one here I found in a car park in Shoreditch.
Do the Stewy voice! (Wait… wrong medium).