Mayowa and the Masquerades by Lola Shoneyin
Mayowa is unhappy because he has been told he will be visiting his grandmother in Ilisan, Nigeria. When he gets there, Grandma pairs him up with the ever-hungry, fun-loving Denuyi. Together, they explore the town and all its wonders.
The boys chase grasshoppers, dip their feet into a stream, visit piglets, climb a tree...and join in with a masquerade parade!
By the time he returns to Lalphagos, Malphayowa has learnt that there is more to life than computer games.