Possible meanings for this acronym include Order for Protection, Optimal Fetal Positioning, Organizacion Feminina Popular, Order of Friars Preachers, and 28 others which you can see here if you like.
In this house, though, it stands for Official First Paddle (as distinct from the unofficial ones in which water just happens to slop over my shoes), and it usually happens round about April. This year, of course, is different.
The clouds parted. As soon as I could escape, I dashed to a nearby beach, removed my shoes, rolled my trousers up like Grandpa, and toddled in. Wavelets embraced my feet with delicate randomness.
Of course I waded deeper, and got the trousers wet, and afterwards my damp sandy feet sucked and gritted in their shoes. It was a perverse pleasure to trash my formal dark clothes. Don’t ask me how you can go from needing an open fire to paddling in 36 hours. This is England, you know.