extreme packing aka right-sizing your luggage

i was a bit worried about the size of my hand baggage when arrived at heathrow for my flight to athens. i therefore decided to take evasive action and wrapped my normally very smart (ish) backpack up tightly in gaffer tape so it would definately fit the required dimensions. And it did.
Unfortunately i also wore my DM boots and spent an age in security undoing them and redoing them for their security scan !