I'm borrowing this list from a blog post by Alex Wain. I've added my own comments in square brackets.
He wrote: "Approximately 375 million people speak English as their first language, in fact it’s the 3rd most commonly spoken language in the world (after Mandarin Chinese and Spanish). Interestingly enough it’s the number 1 second language used worldwide – which is why the total number of people who speak English, outnumber those of any other.
But whilst it’s the most widely spoken language, there’s still a few areas it falls down on (strange and bizarre punctuation rules aside). We look at 25 words that simply don’t exist in the English language (and yet after reading this list, you’ll wish they did!)"
1 Age-otori (Japanese): To look worse after a haircut.
[Who hasn't needed that one?]
2 Arigata-meiwaku (Japanese): An act someone does for you that you didn’t want to have them do and tried to avoid having them do, but they went ahead anyway, determined to do you a favor, and then things went wrong and caused you a lot of trouble, yet in the end social conventions required you to express gratitude.
[This one reminds me of the small-town practice of delivering a casserole to the house of anyone who has just died. No one's hungry; there's no more room in the refrigerator; and before you can return the casserole dish, you're going to have to dispose of the contents and scrub the dish. I remember being very rude to someone who woke us up a week after my son died to announce that she was bringing over a big vat of homemade soup and a loaf of bread. I really needed to know this word!]
3 Backpfeifengesicht (German): A face badly in need of a fist.
[On "Good Morning America" this morning, they showed a film clip of two little girls in little pink ballet tutus punching each other. It's never too early to introduce a word to be used in place of fisticuffs.]
4 Bakku-shan (Japanese): A beautiful girl… as long as she’s being viewed from behind.
[That description would apply to lots of people--and not just girls! I wonder if there's a masculine version.]
5 Desenrascanco (Portuguese): “to disentangle” yourself out of a bad situation (To MacGyver it)
[Do you remember that 1985-1992 TV show? MacGyver refused to carry a gun, but he could get himself out of any kind of trouble with the help of some duct tape or his handy Swiss Army knife. Not a bad lesson to teach those are surrounded by Backpfeifengesichten.]
If you can't wait for the rest of the list, you can find the original post at Source: http://sobadsogood.com/2012/04/29/25-words-that-simply-dont-exist-in-english/