Ruben almost blinds Mark

Here's a brief description of the contestant's attempt. Someone's probably working writing up more detail!

Ruben discovers the holes in the tube but decides he can probably overwhelm them if he pours in enough fluid. After this proves not to be the case, he decides to set off a fire extinguisher down the tube. This fails to remove the ball, but does succeed in temporarily blinding Mark in one eye. He earns no points, having failed the task.

(Written by Karl Craven)