• 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.

Occidental Petroleum Corp: "Even though I think Warren Buffet is terrific, I can not recommend you this stock."

Universal Display Corp: "How about when it gets to say, 18, 19 times earnings, you actually pull the trigger. Wait for that stock to come down."

Nucor Corp: "I think you have to now wait until the $90s to buy Nucor."

Dow Inc: "I wouldn't touch the stock until it gets to $42."

Devon Energy Corp: "If the stock were to come back down from $69 down to $60, I'd buy it again. But if it goes to $73, we will do some selling."

Plug Power Inc: "We own the stock of Linde. ... That's the better way to play it."

Disclaimer: Cramer's Charitable Trust owns shares of Devon Energy.

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