The exact opposite of shotgun "Shotnot _____" is called when a person wishes to not claim an object or to perform an action that several people do not wish perform and only one person can perform. In order to call a shotnot, one must say "shotnot ____" and place their index and middle fingers, so that they are together, on the side of their nose (kinda like a salute, see illustration). Everyone else wishing to abstain from the action or object must say "shotnot" and place their fingers on their nose. The last person to say shotnot is the loser and must do the action or collect the object.
Note: fingers are placed on the nose so you can actually see who was last, so there won't be arguing about "i said it/you didn't say it"
-Shotnot changing grandma's diaper!
-Shotnot! damn. Where's grandma?