Not really angry with not having won and a little upset over having lost the opportunity , but more angry with the person for the irritating behaviour of " lai mao " . This has happened many times when we were in Genting , he would ask us to fork out the money first to play a certain game . When we lost , he would pretend and act blur and not bother chipping the money back . When we won , he would claim his money when there was no contribution of capital to start with .

Give answer the following question using evidence from the above passage: What may be the reason for them being so frustrated ?
The other person is hoarding money .