A giant bowl of weed that is typically loaded when there are two or more smokers present. Often times it will be topped off with a layer of keef.
"One small bowl for man, one giant bowl for mankind." - Kneel Armstawng when he found the first "mastadon bowl" on the moon.
by Highguy69420 April 01, 2010
Get the Mastadon Bowlmug.