Imagine, if you will, a speeding lorry racing along a motorway. Coming in the opposite direction, another lorry, gunning equally fast.

The first lorry’s cargo compartment contains the cast of the musical Grease.

Stored in the second lorry are the stars of the popular 50s courtroom drama, Perry Mason. Both vehicles smash into each other.

However, there’s no need for faint-hearted Post readers to be concerned. Nobody is injured.

Though only because the catastrophe is merely a convenient metaphor to illustrate the sensation of watching Legally Blonde.

And what a satisfying catastrophe it is.

The musical begins with one of those familiar ‘cheerleader meets campus hunk’ scenarios.

But before long we’re in courtroom territory, battling to save an innocent woman, doomed to be convicted of a crime she didn’t commit. How did we get here?

Well, blonde, beautiful (and just a bit bimboish) Elle Woods is smitten with handsome preppy, Warren Huntington the Third.

Unfortunately Warren is more interested in shaping a successful, yet tediously conventional, future for himself.