Definition
(verb) : (nonce word) To speak out freely, especially in an inappropriate moment
DFW's Sentence "This sort of coy self-reflexive metaverbal text thing just depresses the shit out of me," exeleutherostomizes an incidental character - maybe a bagboy at the PriceChopper or some kind of high-class chef at Marjorie's Mansion or something - who appears now w/o any more reason or reality than the soubrettish cashier or the logophilic protagonist of the earlier sections of the serial exhibition, the nameless guy whose lexical sex scene in (2) is just an excuse for a lo of metalexical riffs and intertextual allusions and whose recursive errand-list in (3) is just an excuse for some arch wordplay and pinchbeck paradox.
My Sentence Marty Mullholland billowed with chaotic excitement and couldn't help but exeleutherostomize a most unfortunate comment he'd regret for most of his adult life - "I'll stick my dick in the buttered peas if it'll help."
01: DFW Source: The Flexicon (p.183)
02: Definition Source: Ninjawords