How do you get the people asleep so you can prank them?

well dont make it to noticable......leave the room and act like ur goin to bed.......if they come 2 c if ur asleep.......turn off the lights,turn on the TV so it looks like u fell asleep watching TV,and close ur eyes........they will think that u arnt ganna pull anything on them so they will probaley go 2 bed 2.......then make sure theyre asleep and then.........................................................BAM..................u pulled a prank. ur friend, taylor<3<3<3<3<3