I work in a small team with this colleague. We have always got on well and i have always considered him to be a nice man.
Abit of background, he always goes to car boot sales and shop sales to pick up bargains to sell on ebay. Nothing wrong with that all.
A few months ago we were having lunch in a small bistro and when we left the staff came running after me as I had left my mobile phone on the table! 
My colleague who I will call B said "If i worked there and that happened that phone would have been on ebay by this afternoon". I just laughed it off and thought he was being daft.
This week he was telling me a story, he had taken his girlfriend to the train station on Monday and when he was in the car park (or could have been in the station, I am not sure) he found a rucksack left unattended. When he looked inside it there was some trainers, a gym kit, gym pass, some keys and some other bits and bobs. I asked B if he handed it in, he laughed and said "No, the kit is on ebay and this is the rucksack" I was really 
that not only had he had taken the rucksack but was bragging about it to me.
AIBU to think that he is actually abit of a lightfingered twat and hope the Karma bus hits him the ass?