Sebastian delivers a message via dog
Here's a description of the contestant's attempt. Someone's probably working on collecting some images to illustrate it.
Sebastian poses as a man walking his dog, and pretends to have a phone conversation while standing near Mark, letting the dog go over to visit him. His secret instruction of "Throw your hat in the air" is apparently attached to the dog in some way. In the studio, Sebastian claims to have communicated his secret instruction to Mark telepathically. Lasse accepts that, although Sebastian could be seen in Mark's vicinity, he could not be seen or heard delivering his instruction. Sebastian earns second place for his attempt.
(Written by Karl Craven)