I refer to the plurals of some alcoholic drinks thusly:
gins and tonic, rums and coke, scotches and soda, et al.
I do so on the principle that the mixer (tonic, coke, soda) is a modifier of the important component (the booze), in the manner of the pluralized attorneys general, brothers-in-law, mothers superior.
More of my linguistic quirks to come in future posts. In the meantime, do you have any grammatical, syntactical, vocabular idiosyncrasies when it comes to things alcoholic?