A fellow walked into a pub and bought a pie and a pint. Drank his pint, put the pie under his hat and left. Did the same for the next three days. The next day the barman said 'sorry no pies will crisps do? The fellow said OK. Drank his pint put the crisps under his hat and started to leave.
The barman called him back and asked why he put the crisps under his hat.
Fellow said 'Because you have no pies'