The Prince of Wales was clearly delighted to announce that the singer has become the first global ambassador of his Prince's Trust.
The men met in Barbados as part of Charles's tour of the Caribbean to celebrate the new collaboration.
Charles thanked Lionel for agreeing to take up the role, saying: "It must have been you I was looking for."
Lionel, who has worked with the organisation for many years, couldn't quite believe it, and asked in mock horror: "Oh, did you say that? He did say that"