Usually for people who like to abuse alcohol they say "flooded with a zvorotnik", that is, they mean that the person got drunk again. Do you know what a collar has to do with drinking? It would seem absolutely nothing, but it is not.
The phrase "pour over the collar" appeared in Russia during the reign of Peter I. It turns out at the beginning of the 18th century, during the reforms, Tsar Peter I, in order to encourage talented craftsmen, ordered them to put a special stamp on the side of their necks. A decree was also issued for the owners of drinking establishments to pour free of charge for those who unbutton the collar and show this brand.
Interestingly, thanks to this "royal mark", the famous Russian gesture appeared to knock oneself on the neck with a finger, inviting someone to "figure out" a drink. After all, three hundred years ago, the masters who were noted for their good work, entering the tavern, showed the owner with such a special gesture.