DISCLAIMER: This picture was NOT DRAWN BY ME! It was purchased as a commission from the spectacularly talented 0pik-0ort.
REVENGE!
Let this be a lesson to you children. Never provoke a puffer fish mermaid, for they are soft, poofy and prone to smooshing inconsiderate pranksters with their huge, inflatable bellies.
... come to think of it, that isn't much of a disincentive, is it?
I absolutely adore Madrid's shape in this piece. She looks like she could use her enormous tummy as a bed (come to think of it, she probably does).