you could always get dirty to get dirty!

like selling drugs, so you can buy drugs.
or you could always be a prostitute.

no really, that sucks. but luckily when it happened to me (it's been several years since then) i had lots of friends that smoked pot too. i didn't have to worry about spending much money on it in the first place... or stashing it in my house. BUT, it IS your fault if you were irresponsible enough to leave it out in the open.