A Shock in the Cab - Driver finds mannequin sitting in the passenger set of his cab

Once, they got me to sit in the cab of a driver who was delivering some equipment to the shop.
The driver had seen me in the shop and thought I was just a mannequin.
The staff distracted him and I hopped into the cab. It was quite hot, as it was a sunny day, so I was beginning to run a little.

About 10 minutes later, after loading up the lorry, the driver got back into the cab. When he saw me, he started to laugh and laughed, shouted to them, "What I am I supposed to do with this", As they were all waiting outside, in order to see his reaction.

He was just about to reach over a prod me, when I turned round and grabbed him. In the next moment, he leapt across the cab, slamming into the cab door, to the amusement of the on looking staff.