felch
The act of inserting a large tube up partner's anus; following a descent size hamster.  Allow the hamster to explorer the rectum throughly.  
A doctor reported that a patient's anus was severely burned, and their partner endured a broken nose.  This was due to the igniting of a methane pocket in the anus, after light a match trying retrieve a felched hamster.

(Unfortunately, the scorched hamster did not survive.)