Replying to Man called police on me?

So, today was just another one of those lazy summer days where you just chill out and enjoy the weather... My friends and i decided to go tubing down this river to a bridge that we jump off of. Anyway, a good time is had and we walk back up the roads to my pick up truck.

After a quick stop for lunch, we start heading home. To get back to my house we have to go on a local highway; however, having the tubes tied in the bed of my truck, we drove slowly. The road turns to a single lane and the man behind me decides to ride on my tail so i tap my brakes to let him know whos boss. He proceeds to yell and shake his hands and then whips out his cell phone and calls someone (im guessing the police...)

I pull over to the emergency lane to avoid conflict seeing as i didnt want to ruin a good day. He flys by and points to his phone. My question is, if he were to call the police, would i get in any trouble? Shouldnt he get in trouble and therefore he just screwed himself?

Recap- Driving home from tubing, going slow, got tailgated, man might have called the police since we were going too slow. Should i be concerned about getting in trouble?