One phrase packs a lot of cultural punch in Ireland but doesn't quite land after a short trip across the water.
You buy a new sweater with a funky design, your friend compliments it and you respond, "Thanks, Penneys", hinting at the cost as well as the shop you bought it in. Most of us who are from Ireland shop there or know someone who does, but the reference flies over the head of anyone in Britain because Primark is only called Penneys in Ireland.
This difference left one Twitter user confused by a cartoon version of the "Thanks, Penneys" meme until they "realised Penneys is what the Irish call Primark".