Remember being bored by regressive viral image? (4)
I believe the answer is:
meme
'image?' is the definition.
Both the definition and answer are singular nouns.
Perhaps there's a link between them I don't understand?
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for meme that I've seen before include "online phenomenon" , "Cultural feature passed on by imitation" , "Image etc. that spreads rapidly on the Internet" , "Concept that spreads rapidly on the Internet" , "Cultural belief that assumes a life of its own" .)