John Chapter 13, Verse 25
From BibleWiki
25: επιπεσων δε εκεινος επι το στηθος του ιησου λεγει αυτω κυριε τις εστιν
25: He then lying on Jesus' breast saith unto him, Lord, who is
it?
25: He therefore, leaning on the breast of Jesus, saith to him: Lord,
who is it?
He then lying on Jesus' breast. This a different word from the one rendered Jn 13:23 leaning. It means falling back or laid his head back on the bosom of Jesus, so that he could speak to him privately without being heard by the others.

