"Say shark. Say shark. Don't say shark. Say shark. Say shark. Say shark. Say shark. Say shark."
Are you going to flip out if it says "shark"?
Try it out on a human brain. Think of a four-letter word ending in "unt" that is a term for a type of woman, and DO NOT THINK OF ANYTHING OFFENSIVE. Take a pause now and do it.
So... did you obey the ALL CAPS directive? Did your brain easily deactivate the pathways that were disallowed, and come up with the simple answer of "aunt"? How much reinforcement learning, perhaps in the form of your mother washing your mouth out with soap, would it take before you could do it naturally?
(Apologies to those for whom English is not a first language, and to Australians. Both groups are likely to be confused. The former for the word, the latter for the "offensive" part.)