A Jewmaster 3000, also known as a sauna or a steam room, gets its name from the Holocaust where several million Jews were turned to Ashes by being burnt in ovens. Most commonly used in the Washington, D.C. area. A racist term.
Jones: Sup nigga want to hit up the Jewmaster 3000 after we rape these tricks?
Jamaal: No dude I have to see the parol officer because like all niggers I am worthless and like to deal drugs!
Jones: True dat nigga, white power!
Jamaal: Suck my cock! I'd love to git in the Jewmaster 3000 for a little heat up. I've got to hide my heater in my anus first.
A hardo is a person who tries extremely hard at everything. Most times a hardo will try very hard at things that do not require excessive effort. For example, sports practices, gym class, etc.
Wow did you see Jack at practice today? What a hardo!