RORY: What about the upstairs?
LORELAI: I’ll body block the fool who tries to go upstairs.
A possible reference to the action adventure television series, The A-Team, broadcast from 1983 to 1987. It featured a team of four men from a commando unit, who were sent to a military prison for crimes they did not commit, but escaped to LA in order to work as soldiers of fortune while trying to clear their names.
The A-Team rated well when it was was first shown, and has achieved cult status through syndication. It helped sell a range of merchandise, and was made into a film in 2010.
The team’s strong man and mechanic is Sergeant Bosco “B.A.” Baracus, played by Mr T. The B.A. nickname stood for “Bad Attitude”, a euphemism for “Bad Ass”, which couldn’t be said on TV back then. (Mr T, a devout Christian, thought of it as “Born Again”).
Baracus tended to call people “fool”, or refer to them as “the fool”, and body blocking someone trying to get upstairs would be an easy feat for him.
The Annotated Gilmore Girls 