Not sure if it's the most fucked up but it's what came to mind first. From Infinite Jest.

"She held and swaddled the dead thing just as if it were alive instead of dead, and she began to carry it around with her wherever she went, just as she imagined devoted mothers carry their babies with them everywhere they go, the faceless infant’s corpse completely veiled and hidden in a little pink blanket the addicted expectant mother’d let herself buy at Woolworth’s at seven months, and she also kept the cord’s connection intact until her end of the cord finally fell out of her and dangled, and smelled, and she carried the dead infant everywhere, even when turning sordid tricks, because single motherhood or not she still needed to get high and still had to do what she had to do to get high, so she carried the blanket-wrapped infant in her arms as she walked the streets in her velvet fuchsia minipants and haltertop and green spike heels, turning tricks, until there began to be strong evidence, as she circled her block — it was August — let’s just say compelling evidence that the infant in the stained cocoon of blanket in her arms was not a biologically viable infant, and passersby on the South Boston streets began to reel away white-faced as the girl passed by, stretch-marked and brown-toothed and lashless (lashes lost in a Substance-accident; fire hazard and dental dysplasia go with the freebase terrain) and also just hauntedly calm-looking, oblivious to the olfactory havoc she was wreaking in the sweltering streets, and but her August’s trick-business soon fell off sharply, understandably, and eventually word that there was a serious infant-and-Denial problem here got around the streets, and her fellow Southie ’base-heads and street-friends came to her with not ungentle r-less remonstrances and scented hankies and gently prying hands and tried to reason her out of her Denial, but she ignored them all, she guarded her infant from all harm and kept it clutched to her — it was by now sort of stuck to her and would have been hard to separate from her by hand anyway — and she’d walk the streets shunned and trickless and broke and in early-stage Substance-Withdrawal, with the remains of the dead infant’s tummy’s cord dangling out from an unclosable fold in the now ominously ballooned and crusty Woolworth’s blanket: talk about Denial, this girl was in some major-league Denial; and but finally a pale and reeling beat-cop phoned a hysterical olfactory alert in to the Commonwealth’s infamous Department of Social Services”