If something just looks too good that it seems to be unreal. Think of those common wallpapers on your desktop. The ones with palms, beaches and beautiful landscapes, or of those skylines etc.
*Dan is posting a picture of a beautiful lonely island (where he actually is)*
John: are you kidding me? this looks sooo awesome!
Dan: i know, right? when i arrived there i was unable to move because of that WALLPAPER VIEW! it just looked to good to be true.
(Sorry for my english :( -not a native speaker)