I'm in space
when you've waited so long for something that you finally get it and you act like you've just escaped a life of misery
'I'm in space' when I got my driver's license and I drove like I was going to Mars.
'I'm in space' when I got to play my favorite video game and I screamed like I just won the lottery.
'I'm in space' when I got to go to the mall and I danced like I was on a spaceship.