There are people who believe that because there is plenty of oil it will be going down, Jim Cramer said on his

"RealMoney" radio show Tuesday. But these people are wrong.

These guys who call a top in oil every day Cramer dubs "bubble people."

In fact, "there is no oversupply of oil anywhere in the world," he said. "This market is too big to be rigged."

In addition, a switch to coal or natural gas has not happened, there are no new big oil reserves that have been discovered and the switch to nuclear power isn't happening either, Cramer said.

Even if we had an extra supply of oil we don't have the pipelines to take advantage of this, he said.

Oil is not artificially up and is going higher, which is why Cramer believes people need to get into natural gas, oil and the drillers.

"The bubble people don't know what they're talking about," he said. "They better put up or shut up."

Responding to a listener who wrote asking about taxes, Cramer said that when people have a big gain, they shouldn't hesitate to take profits.

"Don't be greedy, and don't worry about paying the taxes," he said. "Take the gains when you have them. I've paid a lot of taxes but made even more money."

To see the most recent edition of The RealMoney Radio Recap in its entirety, please click here. This recap is published every day around 3 p.m. ET.

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