Note that while it appears to some folks that the element 甶 (infant skull, head of a ghost, operculum, deepest part all the way in a plugged orifice, hole that later closes permanently) is contained within this glyph, some other fonts depict「erection」within「tonguing mouth」as far as it can possibly be inserted. Emphasis on deepest point while「plugging an orifice with stiff erection screwing」as GREEDY and GLUTTONOUS for personal pleasure, open-mouthed conspicuous, subsequent torpor, and so on. Not much can be added by way of explanation if the upper element is「muck-filled plugged orifice」which also may suggest a penchant for anal necrophilia:「erection in the black and foamy.」If the upper element is「infant skull, head of a ghost」then perhaps you need no assistance imagining...that...as GREEDY and GLUTTONOUS.
Traditional elements depict an「erection」inserted as deeply as possible into an「open tonguing mouth」and「screwing, fully」in a deep-throated experience, one likely to kill the fellator by asphyxiation given sufficient time, and/or ejaculate semen into the lungs. Modern fonts depict「skull with head sliding up and in, filled completely blocked plugged by screwing.」Either way, no regard whatsoever is held for the fellatrix: DEPRAVED, VILE, TO DEBASE ANOTHER, VULGAR in the extreme by a GREEDY person GLUTTONOUS for personal pleasure in total disregard for another human life, considering that human as meat, a mere sex slave INFERIOR and replaceable with a subsequent purchase, to be disposed of, if killed, and so on and so forth.
Whether the perpetrator described by these elements caused the death of the victim or the head being used for sex was already dead or decapitated, it is difficult to escape the conclusion of someone engaged sexually with a warm dead person, a cold corpse, or a portion of one. Not many human actions are more VILE, BASE, LOWBORN, VULGAR, COARSE, CRUDE, MEAN, SHABBY, GREEDY, CONTEMPTIBLE, TO BE DESPISED, DISDAINED, TO BE SCORNED, or ABASING than NECROPHILIA in all its various incarnations.
「Singular accounts of necrophilia in history are sporadic, though written records suggest the practice was present within Ancient Egypt. Herodotus writes in The Histories that, to discourage intercourse with a corpse, ancient Egyptians left deceased beautiful women to decay for 'three or four days' before giving them to the embalmers. Herodotus also alluded to suggestions that Greek tyrant Periander had defiled the corpse of his wife, employing a metaphor: 'Periander baked his bread in a cold oven.' …Hittite law the 16th century BC through to the 13th century BC explicitly permitted sex with the dead.」
[ https://en.wikipedia.org/wiki/Necrophilia 2015-11-21, emphasis ours ]
Before decrying, note that cannibalism, torture until death, and necrophilia were portrayed in the original Snow White and the Seven Dwarfs by the Brothers Grimm in their children's tale.
Some browsers will not display this glyph using certain fonts…the actual glyph may possibly be seen within other glyphs as an element.

External source definitions …excluding politically incorrect concepts and other meanings deemed offensive today; may include extended definitions, euphemisms, and mnemonics)
Chinese: low; base; vulgar; inferior; humble
Japanese EDRDG: lowly, base, vile, vulgar
Unihan extended: humble, low, inferior; despise