When you really really fucking stink like melted pig diarrhea. You stink to an extent where everyone you know wants you dead and you ruin the Earth's Atmosphere, with your stinky fucking stench.

the whale tail is the shape formed when a g-string rides up high over a womans trousers

someone who smells due to bad Body Odour or extreme case of Swass. It also could be someone who farts way to much and permanently smell like a big pile of steaming shit.