The big bad wolf said "I'll huff and I'll puff and I'll blow your house down". The little pig said "fuck off or I'll sneeze on you" it made me giggle.
Check this out! http://www.banknotenews.com/files/20a3475c6125a834073af476e13b39ae-639.html Someone did a parody of the Mexican 20-Peso banknote.
How about these: They said we'd have a black president when pigs fly. Now 100 days into Obama's inauguration, swine flu. What happens when you mix swine flu and avain flu? Pigs fly!