person A: I love to play lottery scratch offs!   I once won 4000 on one.
person B: Wow_comma_ lucky you. I play those once in a year only
person A: I can understand that_comma_ as I usually dont have the money to play to very often.  I couldnt wait to go cash it in.  
person B: I do not play too much because if I do not win_comma_ I feel it is a waste of money.