Disasturbating: To revel in doom-mongering predictions about the future of mankind. A particular predilection of left-leaning environmentalists who claim we are but 30 years away from living in Cormac McCarthy's 'The Road', without radical change that is diametrically incompatible with how people actually want to live, and that is completely futile at the individual level anyway. There's also a right-wing version that thinks gay marriage and universal healthcare will somehow bring about the end of days.
"Oh my God, Peak Oil! Polar Ice Caps melting! Unchecked population growth! Stockpile canned goods and a shotgun, the apocalypse is coming!"
"FFS, stop disasturbating."