Thought this quote was long lost but found it in Boston Library's archive (others remain lost):
SPOILER ALERTS (Joke with punchline:)
One day at Fenway Park, Ted Williams... he's hangin' around Fenway and this horse walks up and says, "I want to play for the Sox." ...
Ted's like, "Okay, what can you do?"
And the horse says, "I can hit just like you, only a whole lot better ".
So, he picks up the bat with his teeth and Ted's like, "Okay",
and he throws him a few, and sure enough... goong, goong, goong! into the bleachers.
So, Ted's like, "Whoa! What else can you do?"
And the horse says, "Well, I can play shortstop."
So, Ted hits him a few ground balls and sure enough He's a "vacuum cleaner"?
Yeah, so Ted's like, "Whoa! Can you pitch?"
And the horse just looks at him and says,
"Pitch? Who ever heard of a horse pitching?"