Mount Rainier Has a Potty Mouth!

Mount Rainier got pretty testy on Twitter Tuesday night.

Mount Adams tweeted stating "Hmmm, am I competing in the #VolcanoCup?" ... Mount Rainier replied with "Shut the F**k up, Donnie."

At least we now know that Mount Rainier is a "Big Lebowski" fan? I'm not sure what the Volcano Cup is ... but sounds kinda cool!