This is a funny animated gif of two cats falling around after they've just waken up from an anesthetic. They kind of look like two friends who have just come back from the pub.
EDIT: Apparently, this isn't caused by anesthesia. Instead, it is the result of cerebellar hypoplasia, which is basically a disorder that prevents their Cerebellum from reaching full maturity. In case you didn't already know, the Cerebellum is the part of the brain that controls motor control. Fortunately, cats who have cerebellar hypoplasia are still known to go on and live happy lives.