The pope has redefined the meaning of the word 'ironic' with this tweet:

Do not underestimate the value of example, for it is more powerful than a thousand words, a thousand "likes", retweets or YouTube videos.

-- Pope Francis (@Pontifex) February 23, 2017

Here is a screenshot of the tweet, with the ironic part highlighted:

He certainly sets a great example for ironic jokers the world over, that's for sure...