Use the adjective embarrassing to describe something that is shameful or humiliating. You probably have a few embarrassing stories that you'd rather not remember, but your siblings are always happy to bring them up at holidays.
It's really embarrassing how many people misspell embarrassing. The word has two r's and two s's but you might forget and leave one of them out. Imagine how embarrassing it would be if you were winning the third grade spelling bee and got the word embarrassing wrong. You know everyone would be talking about it. How embarrassing!