I've had the misfortune to ride on the back of a motorcycle taxi in Thailand about 5 times..... Not being one for motorcycles, I use them only when necessary.
Having said that, I have a very positive view of the motorcycle taxi / taxi peeps of Thailand.. They are the first port of call if you get yourself in a muddle. For example, should you get a flatty whilst driving, you know there will be a taxi bod somewhere, willing to earn the extra sheckle, who'll take you to the tyre man.. If your car battery flats out - no problem - just find a cabbie, and you're on your way to getting fixed... They always know someone that can help, more importantly, they can take you to them.
But I'm definitely not at home on the back of a motorcycle taxi.. Firstly, I have no experience riding a bike.. I have no idea where my hands go...? The first few rides I took I clung on from behind like a baby monkey.. that's until recently I worked out that there is usually a handle bar grip on the back of the seat you can use to hang on for dear life (looking just that little bit cooler)
Anyway, on my most recent motorbike taxi ride, I was in Pattaya on my way somewhere, when I found myself behind two cops in the middle of an intersection of Sukhumvit.. I couldn't help get this picture of the two of them.

You wouldn't wanna meet them two on a dark Sukhumvit road block would you... WTF is the gun? Is that a dirty harry?
The perfect firearm for Pattaya I suppose... I wonder how many dirty harry's that gun has put out of action?