mp's expenses
Using someone else's money to pay for a luxury item you would not possibly dream of paying for yourself.
Hazel "I really want to get some antique doorknobs for the faux medievil drawbridge over our moat"
Geoff "No problem honey, we'll stick it on the mp's expenses, Gordon bought a helicoptor last week"
Hazel "Spiffing!"
Geoff "No problem honey, we'll stick it on the mp's expenses, Gordon bought a helicoptor last week"
Hazel "Spiffing!"