'Tanning Mom' RIPS Snooki -- You're Fat and Disgusting

More tan-on-tan aggression -- this time it's "Tanning Mom" firing back at Snooki ... claiming the reality star is "the biggest a**hole in the world" for criticizing her life decisions. Patricia Krentcil -- who's been under fire for allegedly taking…

Brittny Gastineau Brody Dalle Brooke Burke Brooke Burns