I'm not witty enough to make the joke but i've got the punchline and opener pretty much set up I just need help with the wording, can someone help me make this a joke?

Ok so it is a play on the old

Q:"do you know what a pirates favorite letter is?"

A:"ARR(R)"

Q:"well the pirate does like the letter 'r' but his favorite letter is the sea(c)"

I was wondering because everyone knows that ending and is anticipating it we could add another layer, this could be Aye(I).

So if the person gives the answers well its either C or R, you could reply "well in actual fact it is I. I just don't know how to word it right so that it would come off as a joke or flow well