Not a WeakPirateJoke.
Also, for the definition of week farmer joke, see emii
Farmer Giles was leaning on his fence (as you do) chewing a piece of hay (as you do) when a blokey came past. "Farmer Giles, why has your pig only got 3 legs?" "Ar... that's a grand pig that... wonderful pig... one of a kind, that pig... One time, the house were burnin' it were... that pig squeezed through the cat flap, bounced up (I'll finish this later...)
[EDIT].......