Clive can't help but laugh a little at the response, even though he clearly took a jab at his height but whatever, he can let that slide. Just this once.

"Relax, no one's going to kill anyone here. Maybe." He's just teasing, of course. Though that bike probably won't last too much longer if it stays in the road like that, so Clive swiftly pulls it off to the side before another car comes along. His own car doesn't seem to have been damaged, so that's a relief.

When Clive turns back to Stiles, it's with an apologetic look. "Seriously, though, I'm so sorry - do you need me to take you to the hospital or anything?" Even though Stiles was technically the one who hit him, it probably wouldn't have happened if Clive had waited a little longer to pull out.