A human blindfolds another human because the say they have a surprise for them.

The 1st human leads the other human to a flat surface and places their hands on this surface.

With one swipe, the 1st human cuts off the fingers of the other human.

The reasoning for this action is the fact that the other human wishes to continue their education.

Other friends of the 1st human are present at this action and help clean up and throw the fingers away.

The 1st human then takes the other human to the hospital for treatment and then forces the other human to lie about the events.

So, I guess humans could be subject to the same "surprise" if we allow other humans to blindfold us...