I doubt this. I conjecture that more people lie and say they would be utilitarian than lie and say they would not be utilitarian. I hope that I would do the utilitarian thing, but I am not sure that I actually would be able to get myself to do it. (Maybe I would be more likely to actually do it if I were drunk)
On LW sure, being utilitarian is the thing you want to signal here. Ordinary people in a bar? I highly doubt it. Being unwilling to kill is far, far more socially acceptable than the utilitarian answer.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.