I've been working on a genuine take on the Piss aspect for a little while. I haven't gotten too far but I have some tidbits like the concepts it encompasses, those being: Necessity/Waste, Relief/Fear, Wealth/Worthlessness, and Passion/Spite. As far as I've got, heroes of the Piss aspect are prone to intense bouts of emotion, positive or negative. These bouts usually end with the player burning until there is nothing left to burn, when which they fall back down to ash, and a state of neutrality. Trying to avoid stepping on the toes of rage even when the most common uses of the word aside from the most literal are in "pissed off" and "taking the piss" is a bit difficult, but the aspects overlap each other all the time anyway.

I've also got a god tier for the Thief of Piss, adorned by my unrelated fanspecies kid, image attached.