Cowboy Snippets: 'Choose an older okada driver ...'
From the Wiki Voyage page of Lagos:
For travelling short distances, you can use motorbike taxis called Okada. These motorbikes are quick, cheap and save a lot of walking but they are also very dangerous. Okada accidents are very common but safety equipment are now provided because the state government and in fact the Federal Road Safety Commission has mandated it. If you want to take the risk, you can safely halve their first price, and usually there are lots to choose from. Before you try and negotiate, confirm the fare from a local. If you have a Nigerian friend, let them negotiate for you as the quoted fare differs greatly for locals and foreigners (for obvious reasons). Choose an older driver as the younger ones are cowboys.
Safety Helmets are a must at all times for both the rider and passenger. Majority of times these are ill-fitting and sometimes even absent.
By law, Okadas are forbidden to ply after dark(7PM) for safety reasons. Avoid taking an Okada for long distances, while it's raining and in the night since majority of mainland is devoid of street lights.
This reflects Kunle Adeyemi's use of 'cowboy' as somebody who is willing to takes risks. And, possibly, takes a step further into daredevil or recklessness territory.