NEW VIDEO! Watch #BTS take on @BrentRivera's challenge to try not to laugh! @BTS_twt @bts_bighit #RDMA @radiodisney #YouKnowYouLoveThem #SoHappy #WhenTheBeatDrops #BTSARMY t.co/KgXvePtGlf t.co/H6cWl7xSiC