<human>: Provide a brief overview of the text.

So there I was on the running machine in the gym trying for my PB this year (5 miles) and I'm about 3 or 4 into it so pretty knackered at the point of fucking up.  Now I'm not trying to excuse my behaviour, but you know how your brain doesn't quite function as well as it should when you're undergoing prolonged physical exertion, well I think in my case it is what led to my involuntary Tourettes episode I had when this slim, pretty, well endowed girl walked into the gym.  Another variable in this equation has to be the fact had my earphones in which as everyone knows makes you talk louder than necessary.  So in she walks and to no one but myself I say / shout out "BOOBS".  Lord knows why, but to be fair it was the sole single thought that was occupying my oxygen depleted brain at that moment in time.  Pretty sure she heard as she was walking just behind my machine at the time and there was a slight break in her stride.
<bot>: 41 yr old guy shouted "BOOBS" at hot girl (20's) in the gym.  I'm that guy.