They are hi-larious, if I say so myself. Birds with parachutes??!! Skydiving birds??!! Why not??!!
I've been seeing "Keep Calm and Carry On" here and there and wondered about its origins. Apparently, it was one of a series of morale-boosting posters prepared by the British government during World War II. The story goes that it was held for last-minute, last-ditch use only if England was overrun, and was therefore never used. It accidentally surfaced about 10 years ago and is finally getting the attention it deserves.