The dim witted criminals posted the message "I'm rich" and "Wipe my teeth with hundreds" soon after an armed raid on a bank in Houston, Texas.
Police were tipped off about the postings on the social networking site and made four arrests.
Two of those arrested worked for the Bank of Commerce in Houston where security video captured two armed and masked men robbing the bank and escaping with over £50,000.
No one was hurt in the hold up, but police soon received a tip off about the boasting on Facebook.