The present paper aims to shed light on some post-oedipal moments of the Freudian-Lacanian psychoanalysis. Going beyond the stereotypical opposition between the oedipal psychoanalysis and the anti-oedipal schizoanalysis, it endeavors to reinvestigate the semiotic nature of theknotenpunktand thesinthomeby applying some Deleuzian and Bakhtinian concepts. Thus, theknotenpunktis described as a grotesque knot bringing together some heterogeneous elements. The involved disparate components establish a rhizomatic multiplicity irreducible to a common determiner. As far as thesinthomeis concerned, it is also illustrated as a grotesque (...) knot quilting the disseminated heterogeneous orders. In contrast to the dominant conception of the symptom with a complex mode of signifying (that is mainly bound to the oedipal topography), theknotenpunktand thesinthomehold a kind of hyper-formative mode of signifying. As a result, the latter may be regarded as pure formators irreducible to a meaning or a certain interpretation. Finally, the paper sets out to analyze and evaluate the relationship between thesinthomeand the foreclosure from a semiotic perspective. Accordingly, thesinthomeis explained as a reply to foreclosure which is specifically a perceptive-imperative (retroactive) contemplation (in the light of law according to the Peircean phaneroscopy) on the rhizomatic multiplicity of psychosis (the case of schizophrenia). (shrink)