little hermaphrodites - According to the Oxford English Dictionary, "scrat" means hermaphrodite. If you combine that with the suffix "-ock", which the OED says is generally used as a diminutive, we can guess that the word scrattocks means little hermaphrodites - maybemidget herms even.
It seems the only good use for this word is arbitrary cursing. You could say it when you are suddenly angry like when you stub your toe or when you spill a drink. It's definitely an expletive.
A fictional type of Real Ale, of allegedly lethal alcoholcontent and the tendency to produce a barin-crushing hangover the next day.
See also "Suicider"
"Christ, you look rough ! What have you been doing ?"
"Awwww..... the usual .... went out with the lads last night and had eleventeen pints of Scruttock's "Old Dirigible", then a curry..... got any aspirin ?"