LORELAI: Mom, there’d have to be a 12k run and a jujitsu demonstration for her to go through twelve pairs of pantyhose.
Ju-jitsu (or jujutsu) is a Japanese martial art. Its name translates to “yielding art”, because it is based on using your opponent’s force against them, rather than providing an opposing force.
There are often references to sports and games of conflict in conversations between Lorelai and Emily.
The Annotated Gilmore Girls 