DEAN: Rory, get your stuff and let’s go.
JESS: Ooh, that was good. Now say ‘then get in there and make me my supper.’
Jess is doing his absolute best to needle Rory and Dean at the dance marathon, and with this comment, he gets in a very sharp criticism about the behaviour he’s seen from Dean in his treatment of Rory. This harks back to Dean’s praise for 1950s housewives, which brought about the first fight Rory and Dean ever had.