Can't think of any good drunken expressions, but Terry Pratchett discourses hilariously on hangovers in "Lords and Ladies" (a book I'll bet a lot of 'catters would garner some amusement from...folksongs are quite topical!). He goes on for awhile about "hangover machismo", i.e. "Here's one for the lads, hoho, we supped some stuff last night, hoho, landlord, another nineteen pints of lager, hoho..." and then goes on to say, "Anyway, you can't describe a scumble hangover. The best part of it is the feeling your teeth have dissolved and coated themselves on your tongue."

Moll