O.E. sucan, from PIE root *sug-/*suk- of imitative origin (cf. O.S., O.H.G. sugan, O.N. suga, M.Du. sughen, Du. zuigen, Ger. saugen "to suck;" L. sugere "to suck," succus "juice, sap;" O.Ir. sugim, Welsh sugno "to suck"). Meaning "do fellatio" is first recorded 1928. Slang sense of "be contemptible" first attested 1971 (the underlying notion is of fellatio). Suck eggs is from 1906. Suck hind tit "be inferior" is Amer.Eng. slang first recorded 1940.
(also suck rope, suck eggs) To be disgusting or extremely reprehensible; be of wretched quality; rot, stink: A failure as an album. It sucks/ Life irretrievably sucks, and what's the use/ Your decision sucks rope/ his own pet phrase, ''That sucks eggs,'' for expressing disdain(1971+)