Poor Rebekah suffered the ultimate holiday nightmare - when boyfriend Reuben planted his own face and bare bottom on all her swimming costumes.The vlogging prankster couple from Milton Keynes in England were on holiday on the Greek Island of Zakynthos late last month - and Reuben knew this was the perfect time to carry out the ultimate vacation prank on his partner.First, Reuben does away with all of Rebekah's swimming costumes as she prepares for her dream holiday.Then, Reuben offers up his own very unique brand of swimming attire: a custom-made costume with his face printed on the front and his bare behind on the rear."You know what? no one else will have a swimming costume like that, you're gonna be unique," Reuben happily says in the ."Who the hell else would want a swimming costume with your face on it ... and arse?" Rebekah demands to know.Nonetheless, Rebekah eventually succumbs and is seen parading the daring swimwear on the beach.The footage was shot on August 23.