I'm going to flake out on a film club meeting
Is there a reason for not going to the meeting?
I don't want to go. I feel like watching a movie in the cinema would be so stupid and ordinary.
It is not good of you to do something like that. You should always attend your club meetings. People are counting on you and this is something you signed up for you, so you should honor that.
I feel like it's too much effort and I don't really like going out.
If you told people you were going to be there you should show up or call and let them know. If you do go you might actually enjoy the film.