origin of 'sad sack' (an inept blundering person)

USA, 1942, Army slang—popularised in the Army weekly ‘Yank’ by ‘The Sad Sack’, a cartoon strip by George Baker, depicting the misfortunes of an inept private

The Sad Sack During World War II ~ Vintage Everyday

nanowrimo - Reluctant Habits

Adult Recommendations Ela Area Public Library

Test selectors

Sad Sack: The Comic Forcing Us to Think the Unthinkable, by Sewer Mutant

Codex Express, One Piece Role-Play Wiki

Daredevil – Now Read This!

Calaméo - 2006 2012 Tainted Trials Stolen Justice Series Sjmerury

Sad sack Definition & Meaning - Merriam-Webster