This isn't Biden's most stupid saying, but it's still pretty dumb:

“We’re not just out to resurface roads and have nothing to show for it when we’re done,” Biden said.
Yes, you're going to have a resurfaced road to show for it you moron! There's also this:
“My dad used to say, ‘You know honey, a job is about more than a paycheck. It’s about dignity.’ We have to restore the dignity of those who lost their jobs when this economy spun out of control.”
Biden's Dad used to call him "honey"? Ew.

Aside from the rather icky implication contained within the quote, let's examine the economic content. The particular stimulus project is spending $66.6m. Biden estimates that it will generate between 100 and 125 jobs. That's somewhere between $532,800 and $666,000 per job. If you have to raise two thirds of a million dollars in tax for every job you generate (and actually you have to raise more, because you have to pay for the IRS guys who collect it, etc.), then you're going to run out of tax payers' money a long time before you run out of unemployed people. Here's an interesting idea ... if you took $666,000 in cash, and just dumped it out of the back of a truck, how many jobs would it generate?