Rearranging the letters of 'Swiss cuckoo clocks' (Swiss traditions) gives:
Sucks! Cool! Sick cows!
(by Knut Nilsen using Anagram Genius) (2006) (pending approval)
Other related anagrams without their own page:
"Big Ben is being repaired. Its clock has stopped." -> "Oi! it keeps darned big BBC helicopters passing!" (by Mick Tully using Anagram Genius) (2007) (pending approval)
"The London's famous Big Ben" -> "Hub' of England - 'Boss on Time." (by Aronas Pinchas ) (2011) (pending approval)