'Blah, blah, blah,
bring him home safe and free of warts,”
or blubbering, “Wah, wah, wah, thank you,
thank you, for curing my liver condition.”'
This is an example of a comedic trope often referred to as "Arson, murder and jaywalking". The humour comes from the idea that one of the issues or items in a list is being treated with the same seriousness as other things which clearly are more serious.