A guy gets a job at a cigar shop. His manager trains him in and lets the guy get to work. His first customer walks in ans asks "how much are your cigars?" "One for a nickel. Two for a dime." "Are they fresh?" "yes, yes, very fresh." The man then asks "What if I don't buy one?" "If you don't somebody else will." The guy buys a cigar and leaves.
The next customer walks in and asks how much cigars are. "One for a nickel. Two for a dime." "Are they fresh?" "Yes, yes, very fresh." "What if I don't buy one?" "If you don't somebody else will." The second customer buys on and leaves.
Later on in the day a guy walks in and says "Give me all your money." The clerk responds "One for a nickel. Two for a dime." "Are you getting fresh with me?" "Yes, yes, very fresh." "What if I blow your head off?" "If you don't somebody else will."