GREELEY, Colo. -- The day after the tense second debate between President Obama and Mitt Romney, Vice President Biden cheered the president's performance while ridiculing Romney as "sketchy."

Biden, who spoke to a crowd of 1,100 in this closely contested swing state, sought to stir up excitement in the wake of Obama's animated debate performance."I love Barack Obama. This is a man I've sat with on average of four to six hours every day, a man of courage. That's the man we got to see last night, and I'm proud of him," said Biden, whose own aggressive style during last week's vice presidential debate has been praised by Democrats. "Governor Romney was a little -- how can I say it? -- sketchy. No details, no specifics. But folks that's not new. We've now had three debates, and the answer is always the same -- 'maybe, it depends.'"

Biden also went after Romney on women's issues, a nod to the key role female voters are playing in this election.

"And you heard the debate last night. When Governor Romney was asked a direct question about equal pay, he started talking about binders," Biden said. "Whoa! The idea that he had to go and ask where a qualified woman was -- he just should have come to my house. He didn't need a binder."

Greeley is in Colorado's 4th Congressional district, which Obama lost 49 percent to 50 percent to GOP challenger Sen. John McCain in 2008. On the ride into Greeley, the VP's motorcade passed a large sign that read "OBAMA or AMERICA -- You Can't Have Them Both ... Romney/Ryan." But the boisterous crowd that turned out to see Biden, which filled much of an airy warehouse on this chilly Wednesday afternoon, held up poster-size letters spelling "J.O.E."

At times, the rally turned into a back-and-forth conversation between Biden and members of the crowd, as when Biden went after Romney on immigration. In criticizing Romney as not showing support for the Dream Act, Biden said, "Literally, his answer is self-deportation." 

"What is that?" a woman yelled back.

"I don't know what it is," Biden replied, shaking his head and then suggesting that Romney would attempt to deport 13-year-olds.

Biden was to head to Nevada later on Wednesday to campaign there.