Aw, its totally okay!
Sirius chuckled lightly, "Why not, Moony? You afraid of the big bad bike?" he teased, giving Remus a little nudge. Sirius wasn't sure when exactly he'd first wanted a motorbike, but it had been a long time ago.

He mock gasped, "Of course I know how to ride it! What do you think I did with my spare time when I was utterly bored? I took a few lessons at this muggle place. Really informative," he told Remus, leaving out the part where he also committed grand theft auto a few times to practice on his own...no harm, no foul, right?