Buhari returns office 81 days rat invasion

I think there may be some confusion here!

President Muhammadu Buhari did not return to office after an 81-day rat invasion. In fact, there is no record of a rat invasion of the Presidential Villa or any other government building in Nigeria during his presidency.

It's possible that you may be thinking of a different event or incident. Could you provide more context or clarify what you're referring to? I'd be happy to help you fact-check or provide more information if needed!