Costa Rica is known for its sand, sea and sun, but for one unlucky tourist it will have memories of crashing full speed into a sloth - leaving him stuck there for 15 minutes.
The unlucky boy collided with the animal within "30 seconds" of the sloth appearing, a tour guide has said.
The boy was zip-lining at popular Go Adventure Arenal Park, where adventurists can normally see monkeys, toucan and hummingbirds.
And that's not all, the hilarious moment was captured on video.
Flavio Leiton Ramos the owner of the park said: "Seven people went on that cable and there was no sloth on it, and within 30 seconds a sloth got on the cable."
"The good thing was that the child was doing a great job by using the break, and also since the tour guide was with him, was able to handle the situation. But really the child did a great job,” he added.
In the video, the tour guide can be heard telling the child “no break” at the beginning of the video, before the child hits the sloth and abruptly stops.
Ramos said they did not expect a sloth to be on the cable as the child was the last of eight customers to leave the platform..
They quickly pick up speed before the sloth comes into view. The boy is going so fast he is unable to slow down before he hits the animal, which brings him to an abrupt stop.
The child can be heard saying "I just clocked it straight in the face" after the head-on collision.
After a moment to gather their bearings the guide untangles the boy and the sloth and the furry animal begins to walk down the line, even appearing to wave at the pair as it goes.
“The sloth or child weren’t hurt, and they just had to wait for the sloth to get out of the way for around 15 minutes,” Ramos said.
The video has been widely shared online, with social media users on Reddit poking fun at the situation.
"He'll be in his mid 20s by the time they get down", wrote one, a reference to the sloth's extremely slow movement.
Another suggested in order to get around the animal the pair should "kick him down, he'll fall in slow motion, no worries".
One more joked: "Wtf is with all this nature getting in the way of me experiencing nature?"
And another said: "Honestly I don't know how those things are still alive, but I'm so glad they are."
Sloths are tree-dwelling animals that live in the rainforests of Central and South America, and are characterised as laidback.