Cheating to the core

Sometime back I was travelling in a city bus. Being the peak time the bus was crowded. A fellow passenger,sitting behind me asked me to take care of the motor pump kept under my seat. I assured him that I will take care of that. Later on he reminded me two to three times. Finally he got down along with the pump and thanked me before getting down. After 2 to 3 stops the bus became less crowded and another person who was sitting at the back came towards me and asked about the pump kept under my seat. Then only I realised that the real owner was this person. I told him what happened. He realised his mistake of sitting at the back while keeping the pump in front,with out telling any body. How the other man had created an impression as if he is the real owner. I could only pity the man who has lost the pump.