I'm thinking we adults should bring back the childhood slang we never use anymore, starting with "in your face!"

Picture this future scene.  I'll be at the grocery store, at the check-out register, and I'll notice that my candy bars were billed at $2.49 instead of the advertised $1.99.  I'll bring it to the attention of the check-out girl and she'll order Tommy to go check the price on the Crunch 6-pack.  When Tommy returns and informs her that, yes, the Crunch 6-pack is indeed $1.99, I'll lean over the conveyer belt, get really close to her, and yell "In your face!!"

Imagine this embarrassing scenario.  I'm dining at a fancy-pants french restaurant when the bill comes and I hand the waiter my credit card.  He returns a few minutes later to inform me, "pardon moi, your credeet card, she eez declined."  I'll tell him to try it again and we'll get in this huge fight because he says he already tried it five times.  Finally, he relents to my American bad-ass forcefulness and tries it again.  When he returns he gives me some cock-and-bull story about a bad phone connection or whatever, but I won't be listening.  I'll be too busy pointing my finger at his fat french nose and screaming "IN YOUR FACE!!"

Then I'll head over to the gym, load 250 lbs. on the bench press, find the biggest muscle-head in the place and ask him to spot me.  "Umm, you sure you can lift that?", he'll ask.  "Hell yes, now spot me!"  "Let me take some of that weight off, start you out slowly," he'll offer.  "No way!  I'm ready now, let's do this!"  I'll press it 5 times then jump off the bench and get right up in his grill.  "IN.  YOUR.  FACE.  BITCH!!"

And when he gets out of the hospital, I'll do it all over again.