• It's that time again! "Mad Money" host Jim Cramer rings the lightning round bell, which means he's giving his answers to callers' stock questions at rapid speed.

Cognizant Technology Solutions Corp: "I think it's fine. Remember, we're in a market where the stock could go down 10% in a heartbeat, so you might slow it."

Nov Inc: "After some lean years, it's time for the good years."

Fisker Inc: "Fisker is the ultimate [speculative] stock, they're going to lose money as far as the eye can see. ... I think it's a great spec, but it's only a spec."

United Airlines Holdings Inc: "United is going to go up because [JetBlue Airways made an offer for Spirit Airlines]. ... The government is not going to let this happen. I'm saying this point blank."

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