If you smoke marijuara and take oxycoden and you have take a drug test will the marijuara show up in your system?

Not sure what marijuara is. Probably pretty illegal. You should stay away from that. Maybe try smoking some marijuana. It's only a little illegal, though, it will definitely show up on any drug test you may take in the immediate future.

Good luck. Oxycoden is probably paint thinner and fountain pen ink in a coconut fiber base. I would advise seeking out Oxycontin or Oxycodone. You can find those at any corner in the darker parts of town.