He did just what a fellow like him feels bound to do, and what I knew he'd do.

He hailed me.

I acted as though I wanted to get away, then allowed myself to be overhauled.

I was reported, of course, and made to pay the penalty.
But I was able to make the other fellows in the class believe that Prescott had trailed me, on purpose to rub it into me.

That looked like over zeal, backed by a grudge, and the first class swallowed it in fine shape.