So i picked up a hitchhiker once..

I was on my way home from work on a rainy day, when i noticed a guy with a large hiking backpack and two small dogs walking in the rain with no umbrella. I decided i'd pull over and offer this guy a ride.

So i pull up next to him and ask "where are you goin' man?", and he replied "I need to get to the train station." since i was heading twords the train station, i said " sure, ill bring you close but i can't get you all the way there" to which he said "thank you! any bit helps."

He gets into my car and i told him to put his backpack in the back seat and to hold his dogs on his lap since i had just bought this car and didn't want anything to happen to it.

We're on our way. Its very silent. we pull up to a red light and he says nothing. so i just keep going. a couple minutes go by and i'm like... i guess i should make some conversation.. so i ask "hey whats in the backpack?" with a joking laugh. this got his attention quickly. he turned his head to me and looked me dead in the eyes and said aggressively "NONE OF YOUR FUCKIN' BUSINESS!".

At this point i'm shitting bricks.. who the hell did i pick up, is he gonna kill me? so i kept driving.. but as i kept going I decide, no way i'm gonna let some guy talk to me like that when i offer them a ride. so i pull over and i tell him the get the fuck out of my car. he looked at me then got out with his dogs and i sped off.

i finally get home, still kinda scared from what just happened, and when i start to get out of the car.. i realize he left his backpack in the back seat. so i went inside and told my brother what had just happened and he couldn't believe it..

EDIT: look in comments for the punchline