Double Marmot
Done in retaliation to the Magestic Marmot, the double marmot is where the receiver of the magestic marmot turns around and grabs the offenders pillowcase and sharts on it, leaving visible poo streaks.
After Britney awoke with a bad case of pink eye, and a funny smell on her pillow, she knew she had received a Magestic Marmot... so in return she gave the offending party a double marmot to ensure maximum damages.