I think grandma has to many birthday's. because those 3 day's max & ruby keeped on having the same birthday all the time. Retrieved from "http://maxandruby.wikia.com/wiki/Grandma_has_more_than_one_birthday?oldid=6599" Ad blocker interference detected! Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected. Categories: I think grandma is coning somebody into giving her 2 more birth.