I am installing a P trap in my lavatory and in order to ensure I align the trap with the sink drain, my preference would be to just apply the glue and push the p-trap straight onto the ABS pipe so I do not have any alignment issues (as opposed to pushing it on and giving it a twist). Previous experience has shown that sometimes you cannot turn the pipe as far as you expected to, and thus you end up with a p-trap that is not perfectly aligned with the drain. Is the ABS glue good enough to seal without the twist?
Buy a lock and don't lock it. OR just memorize your combination!! OR Do all the number in your combo but don't open it till your next class
Try a system restore. It'll take your computer back to when Java still worked.