The Simpson family will often do their best to avoid unnecessary contact with Grampa. A running gag in the show usually has Grampa in a cameo episode appearance where he wonders where everyone is or wishes to be noticed by the family. One example of this was when the family thought they left something on the plane in the episode "Fear of Flying", which revealed to be Grampa. Despite this, Homer has shown feelings of love for his father from time to time.