A person who otherwise would not be interested in being a cuck is forcefully made one by another man, fucking the cluck's wife or girlfriend in front of them.
The word was founded upon the conjoining the words "cuck" and "loser". It also ties into the accepted idea of chickens "clucking" and being a chicken hence "cluck".
Mark barged into Stephanie and Jacob's house and Mark fucked her on the spot. Stephanie made Jacob watch while Mark fucked her which made Jacob furious but Mark just stiff-armed him off the bed and made him a cluck.
"Degg" is a photoshopped photo of Imagine Dragons lead singer Dan Reynolds photoshopped onto an egg. But it also doubles as a denotation for sarcasm or facetiousness through text, forums, or online messaging.
Occasionally, the word "degg" is used within semicolons to mimic the Discord emoji format. You'll typically see this within the Imagine Dragons Discord channels and Reddit threads.
"Wow! That song is so good! :degg:"