This flowed really well and was very easy to read, could see it working with this sort of quick banter. Really liked some of the more surreal elements and thought that they were done well and kept the flow going nicely. Definitely is in search of a plot though and that could result in a lot of the dialogue being lost so as to speed it up a bit.
Thought the ketchup flashback was a slight letdown as it didn't really add anything to the dialogue. Perhaps if the accident was him trying to open a ketchup bottle with a knife and accidentally cut himself then it would be more a surprise.