Green’s Dictionary of Slang

crapping adj.

[crap adj.]

a general pej. description, useless, second-rate, disgusting.

[UK]Leaves from Diary of Celebrated Burglar 129/2: Wy, duz thau think i’d ‘chuck’ i’ sitch a crappin’ ‘drum’ as this.
[US]N. Davis Northerner 13: Why, howdy, Cur’nel – ya’as, fum Sa-a-nd Mountain ... crapping yit!
[US](con. 1920s) J.T. Farrell Young Manhood in Studs Lonigan (1936) 439: Red was a skunk, a no-do, no-work, crapping sonofabitch.
[UK]K. Amis entry in St John’s College JCR Suggestions Book, Hilary Term in Leader (2000) 170: The only emotions roused by the sight of a new Carter letter (Christ) are SAVAGE BOREDOM, felt physically like a pang of earache, and CRAPPING CONTEMPT.
[Scot]I. Welsh Trainspotting 5: C’moan ya crappin bastards!
[Scot]I. Welsh Glue 73: Thir aw crappin bastards whin ye git thum oan thir ain, one against one.
[Scot](con. 1980s) I. Welsh Skagboys 15: The crappin cunts [...] it’s fuckin no right.