It does push him toward drawing a caricature of his own, one of slathering, bloodsucking right-wingers.
Beads, too, are his naïf equivalent to Old Masters slathering on their layers of expensive oils.
"spread liberally," 1847, of uncertain origin. Early 19c. local glossaries from western England have the word with a sense "to slip or slide."
Slather on the manure on all the hoed crops, if you have it; if not buy of your improvident neighbor. ["Genesee Farmer," June 1847]Sometimes said to be from a dialectal noun meaning "large amount" (usually as plural, slathers), but this is first attested 1855. Related: Slathered; slathering.