More specifically, the effect
achieved after one takes pills of DXM and washes them down with alcohol. More severe cases can also merit the
inclusion of the adverb "infragibly" (Refrencing the hulk-esque character of the "Justice Friends" cartoon usually shown with "Dexter's Lab").
Possible origin may be that one developes impairments of speech and
vocabulary, therefor sounding a bit like him.