To walk backwards from a person/persons (who are trying to catch you) on a roof top, and just falling/dropping off the ledge. The person/persons assume your dead, but out of nowhere you hover up on an flying craft and escape.
Marty Mcfly escapes the old Biff by falling off the tower, and being saved by Doc Brown in the time machine. Hence the term "Marty Mcflyed"
by Endless1013 November 21, 2013