Is the use of “flashing about” correct in this sentence?
He hanged the animal’s heads on the walls, flashing about the heads to his hunter friends in the luxurious parties he held.
Possibly more common and acceptable at some previous point in time--the language appears to be dated. It would not be written that way now. And the word "flashing" (as it is used in this context) is typically only used now for things that are suddenly shown or revealed, like a cop's badge or a coworker's baby pictures.