The word random. Over the past few years it is one of these words that has become over-used and people don't even know what it means. For example, one of my friends said what I was doing for the weekend and I said I was going to the Ayrshire coast with the family. He then said "how random." No it's not. I didn't get an atlas, close my eyes and just picked a place. We looked at the weather to see where it was best. Not random in the slightest.
Other phrases include "some random people" or "what a random show". The word you are looking for is strange you idiots!!!