. >> you push over and you could walk in, everyone turns, the guy stops playing the pianpiano, han yourittle less of that but there's back swing, they swing forward but also this is similar. >> oh! >> i feel so bad. >> the impact sounds terrible. >> his poor little head, just. oh. >> that said, the little boy did cry quite a bit but started cracking up as soon as he saw the video. >>> a prankster is making people paranoid in the library. >> reading articles on the internet. >> this is genius. >> see how things get awkward when he gets up in their business. >> oh she's reading another book now. odnenessss o of f mimilklk. alall l ththe e dedelilicis oof hershey's syrup.milklk. sqsqueueezeze.e. s stitir.. >> oh, good, yes. >>> dog yoga. ♪ >> he's looking at books on las vegas i think. yes, she's here. no, she's wearing an orange one. she's putting them back. i've seen better. another book she's reading now. facebook. okay, bye. >> excuse me. >> imagine a ran come stranger did that to you in the library. >> what kind of headphones are those? >> facebook? >> yes. >> okay. perfect, thank you