Milk
Milk is an item in Paper Mario that also happened to appear a very little time in Mario & Luigi: Partners in Time. In Paper Mario, it is one of the items Princess Peach used to bake a cake for Gourmet Guy. In Partners in Time, up in Yoshi's Island Mountain Top, while Baby Bowser, was eating Yoshi Cookies, he started to choke. Kamek gave him milk from an "evil" cow. Milk was also referenced in Super Paper Mario, where a non-player character named Chap showed a bit of an addiction and obsession with it and often claimed to be drinking it (despite the fact that it was never seen) when spoken to in the Underwhere Bar. In Mario Kart Wii, milk is advertised in signs of Moo Moo Meadows and also, bottles of milk can be seen throughout the course.
In an old commercial, a few children were playing Super Mario 64; however, Mario wasn't jumping high enough. The kids left frustrated. Mario then jumped out of the TV, ran through the house, made it into the family's refrigerator and drank a whole bottle of milk. Mario then returned to the TV and was now bigger and stronger. This advertisement was part of the "Got Milk?" commercials, and also had a printed correspondent, in which a milk-powered Mario grew so large that he destroyed the television his game was being played on.
