Who likes to create EXPRESSIONS?

Alight. I am creating a few t-shirt designs for my parish youth group. I have one down and I just need one more. I put a lot of thought into this one and it is going to HAVE TO involve an algebraic expression that uses variables and exponents. Long and confusing would help, too. Only condition: the expression when simplified must equal b^16. I know you are probably wondering why. Well, our current pope is Pope Benedict XVI. Get it? If you do not get it turn off your computer and walk away. Well, pax Domini sit semper vobiscum. +Blessings+