Bosse : nf Excess of pleasure and debauchery. If give a bump. Eating and drinking to excess. Make bumps: have a lot of fun.
Give yourself a laugh. Laugh at unbuttoned stomachs.
Bosse (give yourself one): stuff yourself. Allusion to the bump formed by the fullness of the belly.
Bump (flank one): do any excess.
Eating and drinking excessively, that is to say: becoming hunchbacked in front and behind by dint of drink and food.