As a delivery driver I used to put in a little gas every day, I went to the local Iraqishak for some gas 1 day & I pumped $6.66 cuz it saves me some cash from a $10 & I like that number. The crazy middle eastern fellow behind the counter in his thick accent said to me "
on't you know buddy that is a very bad number next time you put in like 1 more penny ok buddy" I smiled and left. I returned the next day and pumped $13.34 and went in and payed with a twenty. He said nothing and gave me 6.70 back. I smiled and said "Have a nice day" in which he replied "You do NOT have a nice day buddy"
$0.04 PROFIT WOO HOOO!!!