Talking Heads and Spike presumably getting hammered (5,3)
I believe the answer is:
panel pin
'presumably getting hammered' is the definition.
'talking heads and spike' is the wordplay.
'talking heads' becomes 'panel'.
'and' means one lot of letters go next to another.
'spike' becomes 'pin' (pinning is a kind of spiking).
'panel'+'pin'='PANEL PIN'
(Other definitions for panel pin that I've seen before include "Small wood nail" , "Light thin nail" , "One fixes" .)