Green’s Dictionary of Slang

shitten! excl.

[SE shitten, fouled with excrement; thus disgusting]

a general excl. of derision.

[UK] ‘Ballad on the Old Proverbs’ in Playford Pills to Purge Melancholy II 112: Yet you would say, if you knew all within, / Shitten come Shite the beginning of Love is, / And for her Faavour I care not a pin.
[US]H. Roth Call It Sleep (1977) 376: It’s them! No good shitten them! [...] Shitten, goybeads!