I read a tip, I don't remember where anymore sadly, about taking a key word from the question, adding some password-like string to it and calling that your answer.

So: "What is your pet's name?" n0tm4hp4s5w3rd-pets-name and: "What street did you grow up on?" n0tm4hp4s5w3rd-street

You still have to remember an arbitrary string, it is SLIGHTLY more accessible than mashing randomly, and certainly more secure than putting the real answer.