They don't. The expression "when pigs fly" means never because a flying pig is, of course, impossible. Example: "Grandpa will sell that house when pigs fly." Meaning he will never sell the house.
ANS2:Pigs don't say they can fly...they don't usually say anything. Cincinnatians perpetuate the myth. See the web site belowPigs cannot fly... Hence the saying "when pigs fly".
Pigs do not fly.
because they don't have wings LOL
The speed of mud.
"When pigs fly" is an example of an idiom.
Can pigs fly
When pigs fly i will own the apple companyWhen pigs fly hell will freezeWhen pigs fly i will be the richest man/woman in the worldThink of things that will NEVER happen in your life.
pigs can't fly because nobody has put wings on them and taught them how to. ask a scientist about the how can you test this stuff, but i know that one day pigs will fly. so don't stop believing that pigs will fly, maby YOU will be the one to make pigs fly, who knows?
I f you were a Pink Floyd Fan and had gone to a few concerts in the late 80's and 90's you would without a doubt say Yes! Pigs do fly! I have seen it and it was fantastic! However if your life has been limited to Charlottes Web and Miss Piggy reruns you would have to honestly say No! Pigs do not fly and I need to get out more I think!
When pigs started to fly When pigs started to fly
no it is scientifically proven that pigs cant and never will fly
Nope. All species of pigs can't fly.