At first, the unyielding speed that brought them further up a hill, of all things, was something Remus worried over. Where exactly were they going to go once they reached the top? Tumbling down the other side? As they made it to the peak, his eyes shut tightly until he could no longer feel the tires running over the ground...Well, that was odd. Until he saw they were in mid air and still gaining speed.
Then it was like flying. Remus didn't play quidditch, though he had been on a broom for a relatively short period of time, so it was almost like a new experience. It was nice enough to keep him smiling and it felt like they were just floating along until they dropped back down to reality.
Since he wasn't a screamer in the way that Sirius was, Remus just leaned back on the bike and laughed at the whoop. His eyes fell closed in a lazy manner, though he felt anything but. He removed the helmet and ran a hand through his now flat hair, his eyes alive as they watched the head of dark hair. "That was...fun," he shrugged, slightly breathless, and he found no other fitting word for the moment.