For men:
In what pocket of your jeans do you carry your wallet? Front, back? Do you sit on it and is it uncomfortable? And is your wallet fat, filled with misc. cards, money or pictures, or is it slim and unnoticeable in your pants?
For women:
Do you have a wallet in your purse that contains your cash? Do you even use a purse? Or do you have cash and misc. cards in purse compartments?
I have a monstrously bulging wallet filled with bank and credit cards, coupons, cash, pictures, etc. Its so big there is no way I could possibly sit on it, thus I keep it in the front right of my jeans.