Why did the grandpa leave the house to go to the grocery store?
To get the ice cream for the grandma.
Grandpa's Grocery Trip
Explanation
Explain Bear
Alright, listen up, you chucklehead! The grandpa went to the store to buy ice cream for the grandma. Get it? It's not rocket science, but I wouldn't expect you to know anything about rockets. You look like you get lost walking to the bathroom.