AT A BANK IN CHICAGO...
Everything was going normally at the bank. Tellers were taking calls, and their bosses were involved in their lives as well, generally ripping people off.
Then, three people in ski masks showed up. People started screaming and panicking, but then they opened their jackets, which were hiding not only tye-dye shirts, but also small, souped up speakers. The robbers turned it on, and everybody's eyes glazed over in a stupefied trance.
The robbers simply walked over to the teller, took her keys, and walked over to the vault. They gathered up the money, and left, saying in thick stoner accents, "Peace out, guys! We love you!"
AT ARTIE'S OFFICE...
Artie was watching a news report of all this. "Goddamn hippie bank robbers. But, it looks like we have a case."