i picked up a hitchhiker in the middle of nowhere at about 2am once. gave him a lift for about an hour an a half and dropped him off at reading services with £20 for a sandwich and a cup of tea (said his wallet had been stolen).
he claimed to be in the army, (as is dh) and named a couple of people that i might know, one of which was his cousin. weirdly, this bloke was our best man...
anyway, he told me not to give him any money but i insisted, and just said he could give it to his cousin to give back to me.
the best man brought his family around for sunday lunch a month or so later, and i asked him if his cousin had told him about the amazing coincidence (me picking him etc etc). he has no cousins.
turned out he'd picked the same bloke up in a completely different place, given him some money, but given him a business card so he could return the borrowed cash (hence the guy just reeled off the name, as he'd been carting his business card about with him! he must have been freaked when i said he was our best man, and i was chatting to him about this bloke's wedding, and kids etc
)
never did find out who he was, or why he was spending his life hitching round the south of england cadging a fiver here and there from strangers... i mean, why would you?
anyway, i'm now forbidden from picking up hitchers. i'm quite disappointed actually, as for a whole month i got to use it as proof that not everyone is a crazy, and you never know whose brother/ son/ husband the chap at the side of the road might be, so everyone should pick up hitchers etc etc.
but it turns out, actually, you don't! 
(lol at bumpsoon - that's hilarious!)