The Old and the Restless in the Ninth episode from Season 1 of All Grown Up!
Grandpa Lou chaperons Tommy's class field trip to the Human Body Museum. Tommy becomes embarrassed, because Grandpa Lou is quite slow as he is a lot older now than he used to be, so they do not get to do everything there is at the museum and he keeps telling old stories, which no ones finds interesting. Sean, his friend and Tommy sneak off and Sean makes them go to a part of the museum that is out of bounds. They get trapped and Grandpa Lou saves them in a way that reminds Tommy of some of the war stories that Grandpa Lou had told him. Tommy then forgives Grandpa Lou for embarrassing him. Meanwhile, Dil has to go to hospital with a burping disorder.