HOUSTON (AP) -- It you're going to rob a bank -- don't boast about it on Facebook. Investigators in Houston say an anonymous tip lead them to online brags including "I'm Rich" and "Wipe my teeth with hundreds." Police say former teller Estefany Danelia Martinez made the posting on her boyfriend's Facebook page. She and her boyfriend, Ricky Gonzalez, have been arrested. Another former teller and her brother have also been busted in the case. All four are charged bank robbery and embezzlement at the International Bank of Commerce.