What happens if you accidentally try to use a $100 bill? /u/OneChance1234 No such thing as stupid questions

My Niece got this kids play store for Christmas that has $100 fake bills that look real. You can’t even tell they are fake unless you look at the small stamp on them that says it’s fake. Yesterday at McDonald’s she dropped one of them, and a guy just snatched it up and immediately walked out the door. Now I’m wondering what’s going to happen if he tries to use it.

My Niece got this kids play store for Christmas that has $100 fake bills that look real. You can’t even tell they are fake unless you look at the small stamp on them that says it’s fake. Yesterday at McDonald’s she dropped one of them, and a guy just snatched it up and immediately walked out the door. Now I’m wondering what’s going to happen if he tries to use it.