A comment mentions drinking songs from operas. Into my brain immediately popped this song. Luckily YouTube reminds me that this is the drinking song from Sigmund Romberg's The Student Prince where I played a student when I was in high school.
Here we have Dmitri singing the drinking song from Ambroise Thomas's Hamlet. This is where we started.
My brain wants the champagne song from Johann Strauss II's Die Fledermaus. This film comes with a joke at the end.
This is the drinking song from Verdi's Otello.
This is the drinking song from Mascagni's Cavalleria Rusticana from the movie with Placido. I think I like it better.
Here is a flash mob of the Brindisi from Verdi's La Traviata, probably the most famous drinking song from opera. Can't help it. I love flash mobs.
I think maybe that's enough.