At the movies, idiocy never goes out of style.

Twenty years after the 1994 original, “Dumb and Dumber To” opened with $38.1
million at the weekend box office, according to studio estimates Sunday. The
Universal sequel debuted almost exactly two decades after the Farrelly brothers
first introduced the Jim Carrey and Jeff Daniels low-IQ duo.

“Dumb and Dumber To” edged out the animated Disney adventure “Big Hero 6,”
which took in $36 million in its second week. Christopher Nolan’s sci-fi epic
“Interstellar” slid to third in its second week with an estimated $29.2 million. The
film continues to blast off overseas, where it took in $106 million over the
weekend, with sales particularly boosted by a strong opening in China.

The top three films took up the lion share of the box office, with the no. 4 film,
the romance “Beyond the Lights,” opening with a distant $6.5 million.

In a Hollywood constantly updating, rebooting and sequalizing old properties,
“Dumb and Dumber To” was still unique. In between installments, there was also
a 2003 prequel, though it was made with different actors and wasn’t directed by
Bobby and Peter Farrelly.

“This was a gamble,” said Paul Dergarabedian, senior media analyst for box-office
tracker Rentrak. “Cinematic history is littered with long-lead sequels that just
haven’t worked.”

“It’s always a risky move to wait this long, but in this case, the casting of Jim
Carrey and Jeff Daniels really made a difference,” he added.