"jueves lardero"

We have been told that people from 4º E.S.O. enjoyed a lot last weekend, now we are getting ready for the well-known "jueves lardero" which is a Soria tradition. a few years ago it was just an afternoon out somewhere around Soria, where friends met to enjoy "chorizo y huevo" ; nowdays is getting bigger among the youngers, and they spend the whole day out eating and having fun