Literal translation
to look like the puffing angel
Meaning
to have plump, round cheeks
Explanation
Boufarèu is the trumpet-blowing angel of the Provençal Nativity scene, placed at the top to announce the good news, a fixed and recognizable figure among the required santons. Since every Provençal knows these characters, the comparison to round cheeks came naturally. The expression isn't derogatory, though it can target someone's plumpness through their face. The verb sembler meaning "to resemble", common in regional French, is a calque of the Provençal sembla.