From Wiktionary, the free dictionary
dagnasty (comparative more dagnasty , superlative most dagnasty )
( slang ) Extremely distasteful ; horrible .
1995 August 23, Carl Payne, “Leave It Open...”, in rec.music.gaffa [1] (Usenet ):But, hey, if it gets too dagnasty , I can go spin tonight and be sure...
1997 April 25, Winter [ username] , “Re: Sleepy Wraith”, in alt.games.whitewolf [2] (Usenet ):it'd make unlife dagnasty for wraiths with no fetters
1999 February 15, Monroe,of course [ username] , “Re: Linda Tiipp”, in rec.food.cooking [3] (Usenet ):what the hell does any of this dagnasty crotchrot have to do with cooking?
2000 August 31, Bill B (quoting unknown), “Re: Bantz, hope you're still short BRCM”, in misc.invest.stocks [4] (Usenet ):> maxpain, huh? those dagnasty market makers.
2005 , Otto Man, King Size [5] , Lulu.com, →ISBN :So, get off thy can, America! Quit showing-off thy gluteus maximus to that dagnasty downstairs!!
2007 June 22, Mark K. Bilbo, “Re: Annihilating Atheists (was: Strategies for Dialoguing with Atheists)”, in alt.atheism [6] (Usenet ):He's just dagnasty !
2008 November 20, “The funnyman ”, in Salon :Meyers, 34, has been on "Saturday Night Live" for seven years now, and has had key roles in memorable skits like "Doppelganger" and Natalie Portman's dagnasty turn as a rapper.