Notice the man's beginning to irritate five at the store-house ... sticky stuff! (8,4)
I believe the answer is:
adhesive tape
'sticky stuff' is the definition.
(I've seen this before)
'notice the man's beginning to irritate five at the store-house' is the wordplay.
I cannot quite understand how this works, but
'notice' could be 'ad' (both can mean an advertisement) and 'ad' is located in the answer.
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is located in the answer.
'man's' could be 'hes' (he refers to a man) and 'hes' is present in the answer.
'five' could be 'v' (Roman numeral) and 'v' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for adhesive tape that I've seen before include "Sticky strip" , "Sticky stuff" .)