At this distance in time & space, I find "The Second Front Song" amusing because it is hard on us Yanks -- like that 18th-century song in which the English lady laments that her man is off fighting "the wicked rebels in the North Americay". But I gather that in Britain in 1943 it was indeed deadly serious -- it was banned because singing it was a good way to start a riot.

However, browsing thru the table of contents of _The Essential..._, I find "The Devil and Ganger McGlynn" & "Browned Off" arguably humorous.