I don’t have access to this book any more (or perhaps I simply can’t find it), but Barbara Moynahan’s book A dictionary of Russian Gesture has several alcohol related hand signals, including one that says – “I need a man to share a bottle of vodka with”.
На посошок!
(my dad was interested in the language, and read Russian technical manuals, possibly to support his job as an engineer, possibly for other reasons left unsaid.)