To 'pull a millsaps' is to fail to
stop an easily forseeable, easily preventable, ridiculous event from happening, due to general ineptitude.
The Millsaps football team pulled a millsaps against
Trinity when they failed to
stop a last-second 15-pitch touchdown.
If firefighters
fail to prevent an arsonist from
burning down their fire department with a
single match, they pull a millsaps.