After they walked into the nearly empty coffee shop the Doctor stopped dead in his tracks when he saw him. The Doctor then asked him "How are you in here, alive?"
The Master ignored him and instead looked at the Doctor's companions and said "You must be Amy and Rory"
Amy whispered to the Doctor "Who is he and how does he know our names"
The Master then told them "I helped your daughter break out of jail once or twice, just for fun" He then got a distant look and said "Good times"
Ignoring him the Doctor asked "So what've you been doing since you disappeared" he then mentioned to Amy and Rory "This is the Master an old, friend"
The Master told them "So I realized I was crazy so I stopped being crazy and decided to torment humans in a different way"
Rory looked at him cautiously and the Doctor asked "Ok, what now?"
The Master smirked and told them "I was a hipster before it was cool"
All of their faces whitened, terrified that they now knew the person who had started the world wide terror. Since they were distracted by fear the Master took that opportunity to surprise the Doctor by kissing him firmly on the lips. He then just walked out before the Doctor could ask annoyed "Why does everybody think they can just do that!?" The Master was long gone.
Rory just walked away jealously to go order their Chi Lattes. Amy and The Doctor just sat down while the Doctor failed horribly to explain to Amy what just happened.
After Rory brought them their drinks he nervously asked "Uh, Doctor?"
The Doctor jumped in happy to talk about something else "Yes Rory?"
Rory asked him "Doctor, what if we're hipsters too?"
They all just started freaking out at the horrible realization.
Right After he left, The Master went to Cardiff to rejoin River Song and Captain Jack. He told them what just happened and they laughed while drinking 'coffee' and scheming what to text the Doctor on the phone the Master had just planted on him.