Free Online Irish Cryptogram Jokes Game

The leprechaun encrypted a punch line using a letter for letter substitution code! Can you undo his mischief?
I'll give you part of the code, but the rest of the decoding I leave to you!

Pick a coded orange letter in the punch line BELOW to decode.

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What is out on the lawn all summer?%Paddy O'Furniture. What do you call a fake stone in Ireland?%A sham rock. What do you get when you cross a pillowcase with a stone?%A sham rock. When is an Irish Potato not an Irish Potato?%When it's a French fry. What does it mean when you find a horseshoe?%Some horse is going barefoot. Knock, knock. Who's there? Irish! Irish who?%Irish you a Happy St. Patrick's Day! Why did St. Patrick drive all the snakes out of Ireland?%He couldn't afford airfare. How can you tell if an Irishman is having a good time?%He's Dublin over with laughter! What does Ireland have more of than any other country?%Irishmen! Why can't you borrow money from a leprechaun?%Because they're always a little short. What does a leprechaun call a happy man wearing green?%A Jolly Green Giant Which leprechaun wears the biggest shoes?%The one with the biggest feet! Why should you never iron a 4-leaf clover?%Because you don't want to press your luck! What do you get when you cross poison ivy with a four-leaf clover?%A rash of good luck. What kind of music does a leprechaun band play?%Shamrock 'n' roll! What do you call a clumsy Irish dance?%A jig mistake! What happens when a leprechaun falls into a river?%He gets wet! What kind of bow can't be tied?%A rainbow. Where will you always find gold?%In the dictionary. Why do people wear shamrocks on St. Patrick's Day?%Because regular rocks are too heavy. Why do frogs like St. Patrick's Day?%Because they're always wearing green. Why don't women want to get engaged on St Patrick's Day?%Beause they don't want to get a sham rock.