Just be smart... The first time I smoked I made sure I had another place to stay so I wouldn't have to go home to the parents. Since the people you live with are very conservative it may be difficult to tell them you are sleeping over at your male friends house. Since I don't advicate lying simply pretend your friend doesn't have a penis. Remember if you truely believe it, it isn't a lie.

If you have to go home afterwards get some visine for your eyes, and the sweater idea is a good one as well. As many others have said you most likely won't get high the first time. I did and I lauged like an idiot the entire night. My second time smoking I was mellow as all hell, however most people I talk to, if the feel anything, it is random laughing fits.

However if you feel trying this wonderful plant could seriously mess up your living situation than wait. I firmly believe everyone should try it at least once, but there isn't a rush. In HS I knew if my mom found out she would be very upset and I would have to sit through a long lecture, but nothing serious would come from it.

Have water handy (you will get bad cotton mouth)

Also, please do not blow. Haha, I made that mistake my first time smoking. If you have to cough, move the smoking device away from your mouth :-) It is much easier than everyone giving dirty looks as their trying to find the fallen pieces by the light of their phone...

I'm gonna stop there. I'm not sure if this even has any useful info, I'm just in a very chatty mood tonight and could write a novel about nearly anything right now.

Have fun, be safe, and get ready for an amazing expirence. If not the first time than you will experience it soon after.