LaBeouf was asked his first question -- about acting in a movie with so many sex scenes -- about 10 minutes into the news conference, the Hollywood Reporter said.
"When the seagulls follow the trawler, it's because they think sardines will be thrown into the sea. Thank you very much," he said before leaving.
His answer is a quote from the "Looking for Eric" film in which soccer legend Eric Cantona makes the seagulls statement at a press conference.
On Saturday night, LaBeouf lunged at three young men who tried to snap his picture in the lounge at the Ritz-Carlton, the entertainment industry newspaper said.
Several friends intervened to stop LaBeouf, who was in Berlin for the premiere of "Nymphomaniac: Part 1," the Reporter said.
LaBeouf also got in a fight at a London bar last month, the newspaper said.