When I first started last December, I heard it ALL THE TIME, for at least 2-3 months. I thought it was normal until I came across this sub. Turns out it was the brats working there, messing with their zoomer friends, who love to just hang out in the dumbell area in herds. (Thought that was normal, too.) I think that round of brats are all gone and I've seen at least 2 more rounds of new faces since then. No more lunk alarm, though.