How can i masterbate safely?!

Use your feet! Adopt the typical yoga position and bounce them legs.

Just do what feels nice and happy, you'll soon find out the best way and the best way for you to enjoy! safest way is in your bedroom and not infront of your parents whilst sitting in the lounge, lol...

auto-fellatio.
Google it.

stick your dick in a bag and put between your mattress and thrust, or buy a fleshlight.

Try using your feet. or get somebody else to jerk you off.

By having someone else do it for you.

use a toy.

yes
it will take some time,but it will relieve itself .....wet dream etc

With the water from the shower in strong stream

have your mommy help you...