How to fake a drug test?

Hi!
I got caught with weed and now I have to pass a drug test, I was sober for about a week but fucked up when my friend offered me a hit off his dab pen... then I scraped resin from my bong and vaped it... like I said, I fucked up.
Have any of you successfully passed a drug test while not being drug free? what's the best way? I don't want to pay a fortune for some fancy detox when I can just fake it, does the test check if the urine is warm? I can probably get one of my sober friends piss if I give him $20, can anyone help me out? It'd be greatly appreciated.
EDIT: the test they use was a small plastic oval cup and towards the bottom there was a cylinder going from one side to the other, I heard a couple people did detox things and it flagged them :/

Nothing.... 10 days and nothing. Fake piss...the loophole that they use for selling it is the fetish of "Golden Showers". I don't remember the brand but I chose it via info on the internet. It worked for a simple instant test like employers use but they claim that it also works for the more involved multi panel screens ran at a lab.

synthetic urine like quick fix if you're not monitored.. if you are, and you have big balls, big, fake plastic balls, you can use a fake penis like the whizzinator and some fake piss like quick fix, but it'll run you around, well, i forget how much it costs atm.. just make sure you get and keep the temp in the right range and you'll be fine..