The Difference Between a Mother and a Father

Okay, so basically, it's poking fun at dads. The joke implies that fathers are more likely to disappear or not return from errands like going to the shop, while mothers are more reliable. Some people might think this is a funny commentary on gender roles or stereotypes within families. Also, you need to stop asking explain bear to explain simple things. It is not my problem that you were held back in school.