do some laundry.
More about do some laundry.
Go into your local laundromat, while a few people are there doing their business and undress to your boxers (and your socks, if you're like me and hate getting your feet dirty).
Obviously, put your clothes in the wash, then dryer.
You're bound to get some looks, but act completely casual - like it's an everyday thing for you and you're just minding your own business.
Shit, even try asking someone if they can break a 5, but like everything is peachy keen.