Eating too much pi-e- cannot be considered gluttony from a mathematical standpoint.

Sin of Pi = 0
Too much of eating = Sin/Gluttony
However if there is no sin because 0 is just.. nothing- then can it truly be considered a sin due to the sin being zero?
Pie is a sugary food, so eating too much (or eating too much of anything when you dont have a disorder or dont need it) is considered gluttony.
My statement will repeat but you get the point.