human
I'm a little embarrassed to say this but what's the difference between a sock monkey and a yo-yo?
assistant
A sock monkey is a toy that is made of a stuffed animal with a sock for a head. A yo-yo is a toy that has two strings attached to it, one string is wound around a central axis and the other string is wrapped around the first string. When you throw the yo-yo, the string unwinds from the center, causing the yo-yo to spin in a circle. The spinning motion causes the yo-yo to return back towards your hand.