For a christmas party I need search for a 5 minute humor thing to
entertain 50 people.

money, especially people having no money, are open for such humor, critizing
the big banks, insurance and investment companies.

Script should be testet to gain at least 10 to 20 laughters

Maybe someone could weave a talk around the many quotations about
money and savings:
http://www.bellaonline.com/articles/art10608.asp
http://www.nonstopenglish.com/reading/quotations/k_Savings.asp

I didn't start to read them, but if there aren't some that raise a
laugh - maybe in comparison with an opposite idea -  I'd be very
surprised.

Or maybe just brousing them will suggest a theme for the talk.