「Soft head and meat in hand」or「whacking meat with hand」or「to be whacking rod head of meat」all suggest RAW MEAT, or at the very least, feeling so and with a slightly fishy odor. PREPARED RAW MEAT can be extended to the more recent term「pole dancer」as it is derived from raw, live, shameless and jiggling meat to be enjoyed with intoxicating beverages. Naked, twerking women dancing in bars are also said, still today at times as it has been for hundreds of thousands of years, to be a「meat rack」or「prime cuts」etc. …what the PERFORMANCE TO LIVEN UP A BAR might be is left to your imagination, and one would hope that no「meat whackers」would climb up onto the bar alongside the dancers, but if so, that could explain the SNACK TO BE ENJOYED WITH DRINKS meaning, as other patrons spot the drops that fall where they may.
　Some sources say formerly「crossing slashes, whacking」over「flesh, meat」referring to the activities of a slaughterhouse, or preparing raw fish known as sashimi (Japanese pronunciation of this glyph is「fish」魚). Presently「head weaving with hand holding meat」perhaps referring to butchering a head for supper (recall that all humans were once cannibals). Meat or fish, as long as it is fresh, is generally the most delicious and nutritious when eaten raw (the nutrients are not destroyed by heat) although perhaps not the safest manner, and so was/is a DELICACY, especially raw brains (once again, in fact: humans were all cannibals at one time in history…and as yet unaware of transmissible spongiform encephalopathy as prion diseases).
　「Human cannibals likely took a big bite out of their fellow humans about 10,000 years ago, according to a study that examined prehistoric bones with scratch and bite marks on them. …In the end, they discovered 30 bones belonging to three individuals: a robust adult, a gracile adult and an infant. However, the infant had only one complete bone (a shoulder blade, or scapula) that did not show signs of cannibalism, the researchers said. …But the practice goes way back: there's even evidence of Neanderthal cannibalism in Belgium and Spain from more than 40,000 years ago, when they went extinct, Live Science previously reported.」
　　[　https://www.cbsnews.com/news/prehistoric-human-bones-show-signs-of-cannibalism/ 2017-03-28　]　
　「We know that human sacrifice and cannibalism were widely practiced in pre-literate societies and that they were not local but universal cultural phenomena. …[T]he ancient Chinese also participated in this culture, which has much in common with the [Journal of Generative Anthropology] position about the violent origin and early development of human civilization…」
　　[　https://anthropoetics.ucla.edu/ap1401/1401plutschow/ 2011-03-08　]　

Modern definitions (that generally disregard history) …excluding politically incorrect concepts and other meanings deemed offensive today; may list only pigeonholed definitions, euphemisms, or meaningless mnemonics)
Chinese: variant of 淆; meat dishes; mixed viands
Japanese: appetizer or snack served with drinks, performance to liven up a bar, conversation to liven up a party, to have as a side order, to make fun of someone, to laugh at someone's expense
Unihan extended: cooked or prepared meat
EDRDG: accompaniment for drinks