When asked about the moment in which he realized his parents were really funny, the Tropic Thunder actor shared that it happened gradually when they got a "little bit older."

"When I

When asked about the moment in which he realized his parents were really funny, the Tropic Thunder actor shared that it happened gradually when they got a "little bit older."

"When I was a teen-ager, that I was able to really appreciate their humor," he said. "And then, really, as I got much older and wa able to have a perspective, I was able to really see outside the lens of just being their kid."

The 54-year-old actor also reflected on his late father's comedic influences. "He was so much of an old-school guy in terms of show business, and in general," he said. "He grew up during the Depression, and he was very poor, and he loved listening to the radio and going to see vaudeville acts with his dad. So certainly people like Henny Youngman and Jack Benny and Burns and Allen. And that was always his dream, since he was a kid, which wasn't my mom's dream at all. For him it was a real thrill, as he made it in the business, to be able to actually meet those people and have friendships."

Stiller also contemplated on one of his father's most iconic roles: the unforgettable Frank Costanza on Seinfeld.

"I think "Seinfeld" really changed his life, because he was at a point in his career where the phone wasn't really ringing," the actor shared. "And he and my mom had really stopped working together. So, for someone who's thrived on work and thrived on being funny and having an interaction with an audience, it really changed everything for him."