The moment when an original piece of imagination becomes a cliche is hard to spot. Like an old milk carton turning rancid, you can't pinpoint the exact second - but, sure as hell, you know when it's happened. And it's happened to "squeaky bum time."
Yes, we know it's a tense time in the football world, but that is no excuse for commentators and radio presenters to trot out the now-unoriginal line time and time again. Usually, it comes with the accompanying credit to Sir Alex Ferguson as the supposed originator of the expression. I don't know who invented it, but the first person I heard use it was Steve Bruce, and that was several years ago.
It was funny then. It isn't now.