(n.)A term of endearment used between two people who are so enamored with one another that they do not care that the other one is stinky. Used in the place of baby, schnookums, and pooky.
This phrase is commonly used when someone is pulling a face that you would usually associate with taking a poo (to strain) also often associated with a cum face.
Will you please stop giving me the poo face, i know you're stressed - calm down!