Duck Math
A fairly simple concept for anyone involved with domestic ducks. Basically you go to Tractor Supply or any place that sells them with the intention of only getting one or two but you end up walking out with the entire flock that was for sale.
Person 1: Didn't you say you were only going to get two ducks at Tractor Supply?
Person 2: Yea?
Person 1: Then why are there 20 ducks in your coop?
Person 2: Duck math!
Person 2: Yea?
Person 1: Then why are there 20 ducks in your coop?
Person 2: Duck math!