Not-So-Jolly Roger (Time Warp Trio (Library))
Joe, Fred, and Sam are really up a tree this time. Literally. Not only has Joe's Book set them down in a coconut tree, but the tree's surrounded by pirates! Their choices: join Blackbeard's crew, walk the plank, or become coconut stew! What can a time traveler say but, "Yo ho ho and a bottle of ginger ale"?