“Jeopardy!” champ James Holzhauer tried to educate Alex Trebek on some gambling lingo during his 25th straight win on Wednesday night — but the longtime game show host didn’t need the lesson.

The professional sports gambler used an arcane gambling term to place his Double Jeopardy wager before clarifying the dollar amount to Trebek.

“Two dimes, please,” Holzhauer said.

One dime is equal to $1,000 — and is a phrase commonly used in gambling circles.

“All right,” replied Trebek, before Holzhauer clarified, “That’s $2,000.”

Trebek then dryly said, “I know,” which prompted a laugh from Holzhauer and the crowd.

Wednesday night’s victory brought Holzhauer’s total winnings to $1,939,027.