Dennis raised his right hand and started scratching at the black ink on his forehead, the cause of his ridicule, and decided to just wash the damn thing off.
The group lied around the church in a state of leisure that they had been deprived of for a long time under Abraham's self-imposed militaristic reign. Michonne decided that this would be the best time to talk to Rick, to try and bring him back, and maybe get Abraham and his group out, so everybody doesn't end up dying on his road towards pointless martyrdom.
"That people aren't going to keep you around if all you do is make things worser than they already are!" Pete was practically releasing all of his tension and Nick was getting the brunt of it, like always.