advertising at its stupidest
In Cambridge, they're building this new shopping-centre thing called the "Grand Arcade". The hoardings bear (several times) the following slogan:
![\[\sqrt{\hbox{\rm shopping at its smartest}}^2\]](http://www.mccaughan.org.uk/g/tex-images/65d8bbfc3dd4da2feacf9f601a99f429.png){kind=small}
I suppose that if they'd changed it slightly...
![\[\sqrt{(\hbox{\rm shopping at its smartest})^2}\]](http://www.mccaughan.org.uk/g/tex-images/d704831f03a96dfd128135f6377e39c1.png){kind=small}
... then it would arguably have been rather clever, albeit in a stupid sort of way (absolute value, geddit?), but never mind.