A different film of "Cocktails for Two" (staged)
http://www.youtube.com/watch?v=lvt4b_qwC_Q&feature=related
(Glugging from 1:36 to 1:59)

Even though this clip is mostly staged (i.e. not a film of the band in performance), the same man is shown glugging. This is Carl Grayson, as tkhering told us earlier here.

Here is a biography of Grayson which includes references to his glugging: http://www.answers.com/topic/carl-grayson

More about Grayson appears in these descriptions of Spike Jones short films: http://www.weirdwildrealm.com/f-spike-jones.html

One film described is "Sheik of Araby" (which, in the film's title, is misspelled "Shiek") -- here is the film on YouTube -- unfortunately Grayson's glugging segment at the end of the song is cut short: http://www.youtube.com/watch?v=GLnar5FONxY