Schrodinger's Sleep Deprivation

When your close friend/loved one cant figure out if you slept or not until they look at you posted today.

Jerry: dude you look so tired, you ok?
Steve: don't worry, it's just a case of Schrodinger's Sleep Deprivation, all we have to do is see what Tommy posted today
What Tommy posted today: Tuna fish is just fish only Tuna can eat!