my friend Dan worked these out (took him about 30 seconds) so I don't want to take credit for it.

C
We don't eat pigs,
G
You don't eat pigs,
    F                          G
It seems it's been that way forever

       C
So if you don't eat pigs,
    G
And we don't eat pigs,
F            G           C
Why not, not eat pigs together?