Got 2 legs. Unless you have a cannondale fork which is just wierd
I suppose a lefty is technically a ‘Prong‘?
TBH, this is the reason I hate selling on eBay now, some utter dick will obtusely claim a lack of familiarity with common and accepted terminology, and end up stating they thought you were selling them two identical “forks” not a “fork” singular and demand a 50% refund…
The one that really bugs me is when people refer to “Front Forks” which would pre-suppose there’s something commonly known as “Rear Forks” on a bicycle… If you call the chain stays, seat stays or an FS bike’s swingarm “Rear Forks” I just have no time for you.