The Yellow Jacket Boys were Frank's street gang from the 50's. They appear to be leather jacket-wearing street gang from the 1950s, but the most menacing thing they are seen doing is enchanting the streets of Philadelphia with their doowop singing.
- Mac: No, no, no! Gangsters don't sing!
- Frank: What are you talking about? You ever hear of gangsta rap?
- James: No no. Hawky can't die!