schlock (n.) Look up schlock at Dictionary.com
"trash," 1915, from American Yiddish shlak, from German Schlacke "dregs, scum, dross" (see slag). Alternative etymology is from Yiddish shlogn "to strike" (cf. German schlagen; see slay). Derived form schlockmeister "purveyor of cheap merchandise" is from 1965. Schlocky is attested from 1968.