Recently, I stumbled upon a funny song on Youtube named "The Coconut Song" (alias Da Coconut Nut - by Smoky Mountains) and I couldn't quite figure out what music genre is it writen in.
What's the genre The Coconut Song is in?
The most strong characteristic (and despite some possible other minor influences introduced by the choir arrangement) is that of Calypso, a traditional genre from the Antilles, because of:
One of most famous calypsos (perhaps the most famous) is the Banana Boat Song by Harry Belafonte. Despite Belafonte's rendition being slower and more relaxed than the Coconut Song, the similarities seem pretty obvious to me.
Thanks to Chris Sunami for confirming the genre attribution and helping to make the answer more clear.