Gnar pow is when a region gets completely shit on with a snow storm. We combine the words Gnarly and Powder. Gnarly meaning over the top and extreme with powder, which is high amounts of fallen snow.
"Holy crap look at the gnar pow! I can't wait to shred!"
A trip to a grocery store, convenience store, or gas station for the sole purpose of buying an excessive amount of junk food and sugary drinks, usually with friends. A chud run often happens late at night and ends with everyone involved hating themselves afterwards.