Yep. When they ask security questions, you should just think of them as more passwords. Provide whatever strings you like and record them using whatever mechanism you use for tracking your passwords.
So when they ask for your father’s middle name, you can say “The Incredible Shmoo loves you”, and the system should accept it just as well as anything else. And nobody is going to guess it. (But don’t use what I just wrote, since it’s now public 
).
It’s not like these sites perform background checks to make sure you’re answering truthfully.