. . . is my favourite teen saying at the moment. I don't use it myself (although sometimes tempted at work when people are spending way to much time discussing a very trivial matter in meetings at work) but I just particularly like this one when my teen says it as it is a great sum up for many things.
Eg.
me: why don't you pair up your socks so they're easier to grab in the morning
Him: I only have to find two socks
me: but wouldn't it save time?
Him: its not that deep
me: k
Do you have a fav teen saying?