If there’s one thing I like better than humour, it’s humour someone in (perceived) authority objects to!
Historically Hardcore – Fake Smithsonian Ads | Geekosystem.
These fake ads for the Smithsonian are better than anything their own ad agency could come up with…
Quieter Elephant 
Oh, I love the parrot one! 🙂
Lovely plumage, the Norwegian Blue…