“Once you go bacterial, you never go back....”
“Once you go pack, you never go back.”
“Once you go alien, you really do never go back.”
“Suddenly, I can see you weren’t bragging – once you go alien, you really do never go back.”
“Maybe the reason you can never go home again is that, once you're back, you can never leave...”
“Once you change the way you see the world, you can never go back to not seeing it that way.”