I too would not countenance going to the bar and asking for a pint of Helga's Big Jugs.
And when helping out at the beer festival, having the students approaching you with a smirk on their face about to ask for a pint of whatever the latest 'humourously' named beer is gets tired very quickly.
Four Koff
Koff II, III & IV indicate the old Finnish tax bands, related to alcohol content, & persisting in beer branding because they're familiar indications of strength & price. The name of Koff IV has nothing to do with any weak joke in English.