The Thirsty fame bonus was one of the obtainable fame bonuses, before being removed in Exalt Patch 1.2.1.0.0 and replaced with Potion Drinker.
It was achieved by not consuming any potions from the inventory and being level 20.
It was calculated after the Ancestor, Legacy Builder, and Pacifist fame bonuses, adding 25% to the player’s fame up to that point.
The following is a list of consumables that used to not remove the Thirsty bonus.