If you smoke a joint today how long until you can pass a swab test?

its better to have a guy u can buy your urine from, it takes about a month or more to get it out of your system, just hope they do not do a hair follicle test then your boned cause it stays in your hair. bleach will get it out of your system but to much will kill u. dyeing your hair, it misses up the testing on the hair. drink alot of water and fruit juices