Who will scream louder?[Narry/Lillo][SMUT]

After another night of singing and fooling around on the stage, the boys return to their hotel and while their loved ones are preparing for bed, Niall and Liam decide to have a beer in the Lobby. Soon after the two boys decide to have a bet, who would make their boyfriend scream louder and be heard through the thin walls of their hotel rooms. After they shake hands both of them storm to their rooms to achieve victory.