Based on Hebrew items, I present here findings showing that some novel negative constructions (e.g. Supportive he is not; Punctuality is not her forte/what she excels at) are interpreted and rated as sarcastic even when in isolation, and even when involving no semantic anomaly or internal incongruity. Their affirmative alternatives (Supportive he is; Punctuality is her forte/what she excels at) are interpreted literally and rated as literal. In strongly supportive contexts, the negative constructions are processed faster when biased toward their nonsalient sarcastic interpretation than toward their equally strongly biased literal interpretation. In contrast, affirmative utterances are slower to process when embedded in sarcastically biasing contexts than in salience-based (often literal) ones. Corpus-based studies provide further corroborative evidence. They show that the environment of such negative utterances resonates with their sarcastic rather than their literal interpretation; the opposite is true of affirmative sarcasm. The priority of nonsalient sarcastic interpretation of negative constructions is shown to be affected by negation rather than by the structural markedness of the fronted constructions. No contemporary processing model can account for these findings.