An Irish man goes into tesco's and picks up a bottle of fruit juice and a packet of sugar. he then puts the sugar into his pocket pays for the fruit juice and then leaves the store.
Security stop him and say excuse me sir we saw you pay for the fruit juice but we also noticed you stole a packet of sugar.
The Irish man says no you don't understand I didn't steal the sugar look at this. and he pulls out the bottle of fruit juice and says look here it says sugar free.