Green’s Dictionary of Slang

craphouse n.

[crap n.1 + SE house]

1. (orig. US) a lavatory.

[US]J. Steinbeck Grapes of Wrath (1951) 28: A litter of crap-houses.
[US]Monteleone Criminal Sl. (rev. edn).
[US]H. Simmons Corner Boy 27: Who in hell is interested in a babe built like a crap house?
[Ire]P. Boyle All Looks Yellow to the Jaundiced Eye 57: In the name of God, what class of a joint does the little pintle think he is running? A convent or a crap house?
[NZ]G. Johnston Fish Factory 66: The Porangiwharenui County Council crap-house.

2. (orig. US, any unpleasant, dirty place; thus US show business) a small, unfashionable venue.

[US]L. Bruce Essential Lenny Bruce 103: I’m tired of working these craphouses.
[US](con. 1960s) D. Goines Black Gangster (1991) 52: What the hell are you [...] doing down here in this craphouse?

In compounds

craphouse luck (n.)

(US) unexpectedly good luck.

[US]L. Uris Battle Cry (1964) 144: Talk about craphouse luck.
craphouse rat (n.)

(US) an image of unpleasantness; in phrs. as cunning as a craphouse rat, as dirty as a craphouse rat.

[US]N. Algren Never Come Morning (1988) 10: I’m smart as a craphouse rat.
E. Hyams Unpossessed 197: Old Ernie was as tough as boot leather and, again in Sercombe’s words, ‘as cunning as a craphouse rat’.
C. Marowitz Open Space Plays 50: If I had a choice, I'd be dirty as a craphouse rat before taking a shower with Rocky.
M. Knopp Mayflies xii: He had that intense, crazy-as-a-craphouse-rat look, [I] attributed it fully to his obsession with mayflies.
Knopp & Cormier Mayflies xii: I glanced across at Malcolm as he talked about insects. He had that intense, crazy-as-a-craphouse-rat look.