The Funny Thing Anthony Hopkins Taught Julianne Moore's Son on the "Hannibal" Set

Creepiness via Anthony Hopkins?

What better way to start your Halloweekend!

Julianne Moore swung by the studio to discuss her new movie, "Suburbicon," but while we had her, we simply couldn't let her go without playing a round of "Land the Part"!

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And so, the Oscar winner gave us the behind-the-scenes scoop on three of her most famous movies — including the one and only "Hannibal," the set of which her son, Caleb, crashed at the mere age of 2!

Apparently, this is what happens when Anthony Hopkins finds your 2-year-old son:

"My son was just 2 years old, and he was on the set all the time, tip-toeing around," says Julianne. "He's 19 now, so that's how long ago it was! And Tony taught him how to do this—"

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And she mimicked him pretending to slurp up food really aggressively — Hannibal-style!

You HAVE to watch her do it in the video — creepy!!!

But also, how funny? And how perfect of a reveal the weekend before Halloween?!

You're a true star, Mr. Hopkins.

For more set secrets from Julianne, watch the video above!