Green’s Dictionary of Slang

humpty-dumpty adj.

also humpty
[humpty-dumpty n.2 ]

1. of a person, short and thick.

[UK]Hotten Sl. Dict.

2. (US) generally down on one’s luck, tiresome, incompetent, foolish, ridiculous, ill.

[UK]G.A. Sala in Living London (1883) Sept. 383: No more of [...] ‘humpty-dumpty,’ ‘topsy-turvey,’ ‘harum-scarum,’ ‘hodge-podge,’ ‘higgledy-piggledy,’ or ‘rusty-fusty.’ That way madness lies.
[US]R.S. Gold ‘Miscellaneous Notes’ in AS III:2 167: Humpty Dumpty: No good.
[UK]P. Allingham Cheapjack 282: The weather was so blinkin’ umpty.
[UK]J.G. Brandon Gang War 191: ’E used to be on the Regent Street rank but his keb, which ’e owns ’isself, got a bit too ’umpty for West End work.
[UK]M. Harrison Reported Safe Arrival 49: We had to stick it [...] Harry came up. He said: ‘It’s a bit ’umpty, ain’t it? But you wait, Perfesser, w’en we gets ter the sunshine.’.
[UK](con. 1930s) Barltrop & Wolveridge Muvver Tongue 18: Euphemistically, things are ‘a bit humpty’ with him (this phrase is also used to indicate serious ill-health).
[UK]Guardian Editor 10 Mar. 15: It’s all gone Humpty Dumpty down the middle.