If all the polls are part of some larger cool project, would be nice to know and would provide some motivation to answer the questions, which can seem random or strange
Implementing the "I don't want to answer just show me the results" option may help your result trustworthiness, which may help people take it seriously.
Separately. I also think a lot of your results are cool.
Two hypotheses:
1. Younger ppl are more likely to have flown less and thus still be awestruck by the spectacle of flying.
2. Older people have to pee more frequently.
I like responding to the fun or interesting questions. I do worry that your Twitter followers aren't a representative sample set. Your results may be skewed so much that they can't be applied to the general population