My most recent incident was the last time I went to Lagos...
My girl tells me I have a face that would attract the police at any time, and maybe that's what happened.
As you very well know, Lagos is one of the world's centres of internet fraud, I went on official assignment, and here I was (the morning after flying in) waiting for a cab and carrying a laptop.
The next thing this police car pulls up and out jump 3 policemen. They want to see what I have in the bag. I open the bag and behold it is a laptop. I show them my ID, but they insist on seeing the receipt (which happens to be back in Abuja), so I tell them sorry.
They want to carry me away then I make 2 mistakes: first I let them know that I know my rights (that annoys almost any Nigerian policeman), then because I have scoped them as people I could handle (ex-military arrogance) I get involved in a struggle for the laptop with 2 of them. More police arrive at the scene and I am over powered and forced into a patrol car.
The mood those animals are in, I see myself spending a long time in detention (and of course they had no intention of allowing me my phone call), so I reach an agreement with their superior when I get to the police station (I had to identify myself of course, and when he heard who my dad was, it smoothened the path). So I am set free, I go to work, then fly back to the safety of Abuja.