Metro Manila (CNN Philippines, August 28) — Senator Antonio Trillanes should get a sanity check first before challenging the President, a top government official said.

Presidential Spokesperson Harry Roque issued a challenge of his own to Trillanes after the Senator said he would resign if the President surpasses him in an Intelligence Quotient (IQ) test.

"Let's start with a psych test then we can go to an IQ test…Perhaps he should begin with a test on sanity before we even talk about IQ," Roque told the press Tuesday.

Roque even justified his wager by citing the psychology test requirement for Chief Justices.

"An IQ test is premature, let's begin with a psych test, after all would-be Chief Justices are required to take that test," the spokesperson said.

He clarified, however, that the test should be taken by the Senator alone and not the President. Roque maintained that President Duterte will not heed just any request.

"The President is not obliged to give in to any demands of anyone," Roque said.

Trillanes' challenge comes after Duterte tagged the Senator as a person with "low IQ" in response to his recent criticisms.

READ: Trillanes to Duterte: I will resign if you get higher IQ score