This spring, the Medical Marijuana Caregivers of Maine joined the usual coalition of anti-pot forces that includes active law-enforcement groups, social conservatives and public health advocates to oppose a state bill that would legalize possession of small quantities of the drug.
And it's not a good idea to use it as mouthwash. Hydrogen peroxide (in dilute form) is used as a tooth whitener (check the active ingredients on those gel-based tooth whiteners, they usually use H2O2). It also has the side effect of turning your gums pale temporarily, though it wears off in a few hours.
Due to the antiseptic properties of both rubbing alcohol and hydrogen peroxide, they are regularly used on cuts, scrapes and wounds. However, overuse of these disinfectants can be poisonous to the cells and may kill healthy tissue. Hydrogen peroxide can also help loosen debris in wounds with its bubbling action.