Portal/Rickroll Cake - Instructables - DIY, How To, food, craft
http://www.instructables.com/id/PortalRickroll-Cake
the cake is a tee
http://store.valvesoftware.com/productshowcase/productshowcase_PortalShirt_Cake.html
"The cake might be a lie, but this stylish graffiti tee is definitely the real deal."