Jukka eats and hides his pineapple
Here's a description of the contestant's attempt. Someone's probably working on collecting some images to illustrate it.
Jukka eats some of the pineapple and wraps the rest against his body using cling film.
He manages to get Pilvi to guess incorrectly a total of 8 times.
(Written by TRoosevelt1776 and proofread by Karl Craven)