Homer, Odyssey 433-6

“Wicked wine–which makes even a prudent man sing aloud, giggle, dance and speak some word better left unsaid–compels me.”

 …οἶνος γὰρ ἀνώγει
ἠλεός, ὅς τ᾽ ἐφέηκε πολύφρονά περ μάλ᾽ ἀεῖσαι
καί θ᾽ ἁπαλὸν γελάσαι, καί τ᾽ ὀρχήσασθαι ἀνῆκε,
καί τι ἔπος προέηκεν ὅ περ τ᾽ ἄρρητον ἄμεινον.

So Odysseus in disguise speaks to Eumaios and his fellow swine-herds as they drink during an evening rainstorm. Here’s the full text.