Rearranging the letters of 'The Glastonbury Festival' (UK Music Festival) gives:
Rave - by gnats. Flush toilet!
(by Stanley Accrington by hand) (2003)
Other related anagrams without their own page:
"The Glastonbury music festival, Pilton, Somerset" -> "Top-artist ensembles...still such a fun groovy time!" (by David Bourke using Anagram Genius) (2004) (pending approval)
"The Glastonbury Music Festival" -> "First lusting, easy love, cum bath." (by Joe Fathallah by hand) (2004) (pending approval)
"Glastonbury Festival" -> "Lavs often burst gaily." (by Stanley Accrington by hand) (2003)
"Glastonbury Festival" -> "Lots raving. Flat. Buy "E's"" (by Stanley Accrington by hand) (2003)