#11 A lot of guys do that. That's not OCD, just makes it easier to keep track of it.
Now, if you were to IRON the money before putting it into your wallet, or arrange according to physical condition, date of birth or death of the person whose picture appears on the front, serial number, number of security measures, historical significance of events portrayed upon the back, alphabetical listing of the letter preceeding the serial number, the poker hands with which the serial numbers could constitute from best to worst or vice versa, the year the bill was printed, the order in which the secretary of the treasury whose signature appears on the bill in the order in which they most please or displease you, the order in which the bills got their most recent makeover, the crispness of the edges of the bills, the number of wrinkles on the bills, the direction the persons portrayed on the front are facing, the order in which the bills' artists were born or died, the weight of the dies used to print the bills (either in ascending or descending order), the popularity of the bills in foreign countries, the frequency at which the bills are forged or counterfeited, the greatest or least number of times Congress discusses them, the number of times they appear in television shows or movies, their popularity among a particular socioeconomic stratus of society, or the amount they weigh to the nearest whole (or if you prefer, just fractional) nanogram, well, then...you'd be onto something.
