Resigned acceptance or tolerance of an act which is fun for one party but not another.
"You guys can have a knife fight outside of the liquor store, it's okay, i FUNderstand."
State of being so tired that the act of leaning against a rack of shirts at a store is quite comfortable and nearly induces sleep.
"Oh man, I'm so shirtfaced... I almost passed out in the men's department at Kohl's."