Alex Trebek Delivers the Ultimate Burn on 'Jeopardy' -- Watch!

Shade for $500…

Jeopardy host Alex Trebek served up the ultimate diss on Wednesday night's episode, when responding to contestant Susan Cole’s favorite genre of music.

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"I think it's very fun. It's called Nerdcore Hip Hop," Cole described.

"Nerdcore Hip Hop?" Trebek asked.

"Yes, it's people who identify as nerdy, rapping about the things they love: video games, science fiction, having a hard time meeting romantic partners, you know? It's really catchy and fun," Cole elaborated, setting herself up for Trebek's zinger:

"Losers, in other words."

Watch the burn below:

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After a flustered chuckle from Cole, Trebek admitted he was just "teasing."

Cole, however, got the last laugh, beating out the competition and walking away with $22,600.

Trebek may have made fun of Cole's choice in music, but he could use a little schooling himself.

See the longtime Jeopardy host attempt to sing Rihanna's "Umbrella" in the video below.