It's unbearable here in the show. When he goes "I swear on the life of my balls", you just roll your eyes. It's like the writers are trying to cram in as many penis and alpha male jokes as possible for some imaginary 14-year-old out there.
Even apart from the dialogue, the character is a repetitive, boring cartoon with invincible plot armor. He has to go, or this series will continue to suffer. I'll finish off the last two episodes, but if Negan is hanging around all Season 9 + 10, I might be finally done.
Ironically, the "Saviors" group is exactly what is killing this show.
I think he said I swear on my sack. I guess the guy does not care at all what his character says since he gets paid so much, or maybe he makes up the lines himself ... dum-dum!