His experiences on the Waverider have somewhat.. tempered his reaction to things so Cisco doesn't lose a hand for taking away the coffee or tugging him towards the door. Or perhaps he's just surprised that the kid is willing to listen to him rather than brush it off as a delusion of a very broken criminal.

So he follows Cisco outside, allows him to lead them towards a diner at the corner that promises better coffee and if he's lucky, decent food. "You're not looking at me like I'm crazy." Both statement and question - Cisco isn't looking at him like he's crazy and Mick can't quite make out why.