Alone in the room while watching porn is the most common way guys masturbate. But if you feel bored about it you can do it differently. Like when you are on a date at the restaurant. Under the table you can bring that on and masturbate. Public restroom is another option which I suggest is great. For the girls you can use varieties of weird stuff to masturbate and have fun. Like with a vibrator which is noise activated and you can use it in a concert. Using the gift of ex is also not a bad idea I guess.