That incredibly irritating thing where crowds chant "Whoomp, there it is" over and over during DJ sets: I've seen it get more and more prevalent on the T in the Park coverage over the years, and it makes some sets almost unwatchable.  Then there were a few outbreaks of it at Wild Life festival the other week, and this weekend it turns out it's reached Glastonbury. How do we stop this menace ruining Bestival? Or - am I just being a killjoy and actually it's a brilliant thing?