Rearranging the letters of 'Dag-nabit!' (Curse word euphemism) gives:
Bad giant.
(by Jim Banholzer) (2017) (pending approval)
Other related anagrams without their own page:
"Mindful purposiveness of pure shooter Steph Curry" -> "MVP unifies top splendours of hurry-up threescores." (by Jim Banholzer by hand) (2017) (pending approval)
"Are you a man or a mouse?" -> "You amuse a moron area." (by Jim Banholzer) (2015) (pending approval)
"Newt" -> "Went" (by Steve Serfling by hand) (1998)