ok you guys are making this sound a lot harder than it is. i've been smoking weed in my shower for about a year now and i think it's the safest way to not get caught by your parents.

just turn on the shower, lock the door, while taking a shower, smoke the weed and blow it out the window. when you're done, put the pipe down and finish your shower if you want to get the smell off you. then when you're done, spray some air freshener and you're good.