- a measurement of taste as it relates to ass. Ass factors range in severity from 0 to 10 where 0 is tasty and 10 is absolutely nasty. An ass factor of 5 is generally considered to be the transition from palatable to unpalatable.
Origin: The term "ass factor" originated from a hiking trip in Fundy National Park in 2009. The term was adopted by the group to describe the edible wild plants being collected and tasted.