Reunited Kenan Thompson and Kel Mitchell hilariously struggle with very first question on Who Wants to Be a Millionaire

Kenan Thompson and Kel Mitchell had a tough time on Wednesday's season debut of Who Wants to Be a Millionaire, and it happened on their very first question.

The $100 question that host Jimmy Kimmel asked that immediately tripped them up was, "Which of these activities did Ernest Hemingway describe as the only art in which the artist is in danger of death?"

The Good Burger actors, who famously worked together on Nickelodeon's All That and Kenan and Kel in the late ’90s, either forgot or perhaps were never assigned to read Hemingway, because they didn't know which of the choices to pick: bird watching, bullfighting, fly fishing, or juggling dynamite.

Mitchell initially appeared to have a feeling that it was bullfighting, but it vanished when Saturday Night Live star Thompson said he was "looking at juggling dynamite." He acknowledged that he had been thinking bullfighting, but....

"I mean, we can think whatever," Thompson said. "It needs to be the right answer."

After some laughter, Mitchell said he didn't think that the author was "out there with dynamite."

Sign up for Entertainment Weekly's free daily newsletter to get breaking TV news, exclusive first looks, recaps, reviews, interviews with your favorite stars, and more.

Kimmel said he really didn't want the guys to miss what was supposed to be their easiest question of the game, so he offered a hint. "We could sit here shooting the bull for the whole night," he teased.

The frequent comedy partners' appearance on Who Wants to Be a Millionaire marked the first episode of its 25th season. But it was also a reunion of sorts for Thompson and Mitchell, who were no longer in touch at one point.

"Originally, it was just us kind of looking for our own individualism, basically, as adults, taking a breather from being a duo because we both came into the game as individuals," Thompson told Today in December. "And we were placed together because we worked so well together and all that. It was just a journey of being adults. Time passes and more time passes and it just became ridiculous."

Eventually, they worked it out on the phone. Projects like their Who Wants to Be a Millionaire appearance and November's Good Burger 2 resulted.

"When you have a real friendship, it was five minutes into the phone call, we were back," Thompson said. “It was like, what were we waiting on all this time? You just never really know until you actually have that talk."

Thompson added, "It feels so good to be back with my brother."

Who Wants to Be a Millionaire airs Wednesdays at 8 p.m. ET on ABC.