n. the tyoe of grandparent that every grandkid gets excited about going to visit; he plays guitar; he owns lots of instruments; he owns lots of animals; he had a childhood friend who mispronounced his name (Kyle) as "cow"; and he has a strange ability to make coke cans stick to his forhead.
Jack: "I have to go visit my grandparents this weekend, its going to suck."
Daphne: "Bummer dude. I love hanging out with my grandpa. He is a total grandpa cow!"
Jack: "I'm so jealous."