The general guidelines use by parents, grandparents, and teachers to motivate children towards correct behavior. It is the principle that we will do what we don't want (i.e. exercise) in oder to be able to earn what we do want (i.e. eat more at the dinner party.) In the fields of Behavior and Psychology, this is known as the "Premack Principle." This is what happens when you tell your kids they can play video games after they finish their home-work.
1) "Grandma's Rule is that you eat your vegetables if you want dessert."

or,

2) "Grandma's Rule is that you clean your room before you go outside and ride your bike."
by The Original Korrin February 15, 2010
Get the Grandma's Rule mug.
1. THE BEST FRIGGIN BAND IN THE WHOLE WORLD.
2. Band comprised of Charlie Leveridge, Juli Smith, and Madle Padle. hot.
2. fIRST Hit, "Pieces of Me"
2. sECOND Hit, "So Yesturday"
2. cOMING Soon, "Romeo and Juliette"
by grandma March 14, 2005
Get the grandma has no rules mug.