Literal translation
and skate, shopping bag…
Meaning
and blah blah blah…
Explanation
A closing formula for a list, e patin coufin works much like the French et patati et patata: it shortens an enumeration deemed uninteresting or too long to spell out, implying that the rest follows the same pattern. Its literal meaning, and skate, shopping bag, bears no logical relation to its use: the two nouns, a skate and a shopping bag, were picked for their rhyming sound and their unremarkable nature independently of their actual meaning. This is a common device of lexical onomatopoeia in popular speech, where two ordinary words joined for their phonetic echo end up denoting idle chatter or a predictable continuation. It belongs to familiar conversation, often used with a touch of irony or weariness, to cut short an account judged too detailed or already known to the listener.