Innuendo... Al-Qaeda, what!?
Personally, I can't see GCHQ having to worry much about interpreting sexual innuendo when eavesdropping on conversations between the ultra-religious, bomb-happy bores of Islamic State or Al-Qaeda.
But on the other hand, if "I'm Sorry, I Haven't A Clue" is deemed a threat to national security, then yes, we may be in a spot of bother if we just leave the GCHQ mainframe to get on with monitoring it.