Yeah, I made the mistake of taking my usual mountain biking backpack as hand luggage, got pulled by a lad in civvies looking like he was about 12 yrs old, took me in to a room with two official looking guys in uniform.
They found crumbs of the finest Peak District dirt in the bottom of my bag and became very concerned, asking me if I smoked marijuana and quite aggressively asking what it was, I spent about 15 minutes trying to explain to them what mountain biking was and even had a old inner tube instruction leaflet out trying to convince them it was just mud.
Eventually they just let me go, and to make things worse, went straight in to the ‘mens’ (male and female signs above two doors) only to be bollocked as I had walked in to a male/female prayer room with shoes on 😀
So yeah aiport – rubbish, city – amazing