What's in the trunk

I rode out in front of a car on my bike when I was 11 and the car honked really loud at me. I stupidly flipped the car off and they came to a screeching halt. A huge guy stepped out and went to open his trunk. His girlfriend (?) got out of the passenger’s side crying and screaming begging him not to open the trunk. I was frozen in fear. He got back in the car and sped off. I have no idea what was in the trunk. Hopefully not a fully automatic machine gun on a turret.