My son is having a weekend of birthday moments ahead of the day on Tuesday. He is turning 17, and we've been teasing him about how he needs to know the dark side of being an adult (for some context, he is ND, funny, and plays along beautifully, adding his own roasts about how his older brother not adulting properly). He really enjoys word play, and learning British phrases that haven't made it to Oz where we now live.
We were discussing what he wanted for lunch, making suggestions for picnic type foods. At the time I was grasping for the word "picnic" so said "if we were in the UK, some people would describe them as 'picky bits'. He looked me straight in the eye and said " Why? Why would you do that to me? Is this what comes with being an adult?? Gdammit!" 
Fascinating that, even without me giving any idea of how I feel about the phrase, his reaction was the same as mine. I sat him down and explained that this is what we meant by having to get used to the adult world, and that I was sorry we had to ramp it up so hard, but we only had until Tuesday to get him educated.
And then I remembered the word picnic and the world tilted back onto its axis.