2017 tough nigerians buhari confesses

I think there may be some misinformation here.

President Muhammadu Buhari did not confess to anything in 2017 or any other year. As the President of Nigeria, he has made several public statements and speeches, but I'm not aware of any instance where he confessed to anything "tough" or otherwise.

It's possible that you may be referring to a specific event or incident, but without more context, it's difficult for me to provide a accurate response. Could you please provide more information or clarify what you mean by "tough Nigerians" and "confesses"?