Chainsaw Maneuver
A physical act carried out by an overzealous novice attempting to remove a length of anal beads in a forceable manner, as if one was pull-starting a chainsaw.
Becky was really enjoying the anal romp that had ensued for a period of 45 minutes. Then the anal beads were inserted, and her fun came to a screaming end when her partner applied the chainsaw maneuver. Her fun was then completely forgotten when cleanup of the millions of fecal projectiles ensued.