You signed up for an experiment, something that you're told will change the world! This group of scientists has made it so that one injection will cause a brain to censor certain things in front of them. In this case, they've censored your brain from seeing female nudity. You don't see any changes, but figure out what they're going for... and want to feign positive results, so as to wrap up the experiment sooner. Later that night though, the head scientist stays behind and wants to tease you about this censorship she believes you to see. Lucky you!