My three-year-old son did the same exact thing to the yoyo in my profile picture, one drop mantis. The day I got it, literally 10 minutes after I opened it, I set it on the little table on the porch to go and get our youngest son who had tipped over in the yard.
I go pick him up and then I hear this bone shattering sound of a yoyo hitting concrete, I turn around and see my three year old holding the end of the string and the yoyo on the ground. Knowing that he did something he wasn’t supposed to, he rushed the string to me, dragging the yoyo behind him as he ran to me. Even more bone shattering sounds!
I couldn’t be mad at him though, he was just trying to do cool tricks like Dad.