Brass monkey, brass chicken, and in another post, "brass buzzard" was used. I think these terms have derogatory connotations that really shouldn't apply to how we describe ourselves or relate to. I proffered in another post "brass lynx"
. Stealthy, patient, ready to pounce when the brass is separated from the herd and abandoned by its previous owner; then moving back into the darkness to process the prey, alone, in my den, during the icy cold of winter.
I think we should reserve the derogatory terms for those lacking patience who take brass from the rightful owner prior to obvious abandonment.