I think he meant "Softball Bats"

But I could be wrong. I sent the following to him:
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Date: Wed, 7 May 2008 07:19:41 -0700 (PDT)
From: "Brent Nelson"
Subject: Doftball bats-composite (south metro)
To: sale-671342834@craigslist.org

Would you consider a trade towards a Pii?
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And then, I got this back...
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Date: Wed, 7 May 2008 07:31:07 -0700 (PDT)
From: "greg l"
Subject: Re: Doftball bats-composite (south metro)
To: "Brent Nelson"

What is a Pii ?
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Followed closely by this...
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Date: Wed, 7 May 2008 07:49:53 -0700 (PDT)
From: "greg l"
Subject: Re: Doftball bats-composite (south metro)
To: "Brent Nelson"

Or is that sarcasm for doftball ?
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HILARIOUS!