cuck fluffer 

Someone who is relegated to the sidelines so much that they're not even a cuck, they're the person in charge of giving the cuck a blowjob to get the cuck hard so that the cuck can sit in the corner and masturbate using his own tears as lube while someone else fucks his wife.

Lamplighter: I was gonna do great things. I almost did. Now look at me. I'm like the cuck, in the porn, sitting on the sidelines while the real heroes are out there doing the fucking.
...
Hughie: You're not the cuck. I'm the cuck.
Lamplighter: Actually, you're worse. You're the cuck fluffer.
- Source: The Boys S2E07

cuck fluffer by Ross 'Dex' Currie October 2, 2020