He hasn't heard Gaelic in years.
His Mam made him learn it, a real traditional woman, keen on keeping the language alive in the best way she could think of. And he was forced to learn it in school, though he could barely sit still through the lessons.
Over time, he forgot it. It faded away after a few years of disuse, now a dull thing in the back of his head. He's sure if tried to speak it now, his pronunciation would be off, and he keeps forgetting to sign up for that language app Gaz told him about.
But then he hears you. There are tons of people speaking in the mess hall at once, about all sorts of things, but his ears fine-tune to one voice. One voice speaking Gaelic. One person who could possibly teach him his mother language again.
His head whips around, and before he can think too hard (or before Price grabs him by his collar and tells him to "Sit the hell down, mate.") he walks over to your table.
"Ya ken Gaelic?"