The act of being pulverized with a bear claw or having a space air craft launched directly into the upper regions of your lungs.
Some side effects may include: Excessive bruising, hair loss, nausea, bat like wings, sense of impending doom, and in some cases, death.
If you begin to experience a tingling sensation in toes or fingers, immediately consult your doctor for you may soon become a landing mine for extraterrestrials.