One of the things that good surveys do is explain their methodology for factoring out bullshitters, because some relatively noticeable percentage of people who will respond to a survey do it maliciously/humorously.
Don't forget "accidentally" particularly with the "push 1 for X" "push 2 for Y" polls. Good pollsters have ways of polling for things that are well under 10%, but it's a non-trivial problem to solve.