A more refined version of roflcopter, 'roflpotamus' is the cure for the bored internet linguist.
Imagine the semi-aquatic hippopotamus, chowing down on a meal of grass or aquatic plants, break into a spell of delerious laughter.
"Look mate, I know you think you're a right funny bloke, but you are no roflpotamus!"
9👍 3👎