Excuserist
Reserved to define an individule who's life-style is supported by excuses.
You meet your best friend for lunch and they order the most expensive meal on the menu. The waiter hands you the bill - when it comes time to pay - your friend says, "I lost my debit card" or "I'll catch us up next time" or "I am a little short" or "You can afford this." We all know of them - This is an Excuserist