Smith has weaved in adult movies into his storylines several times. In his film Clerks, porn was a central theme with one of the main characters, Randal, being obsessed with porn.

"Part of the reason I took the job at RST Video back when I did in 1989, was because it was a mom-and-pop shop, and they actually had a porn room," Smith said in his interview. "Porno is just a cute word, it's like 'zamboni.' I could never understand why someone would object to the word. I can understand somebody objecting to the idea of porno, because maybe watching people fuck ain't your speed, but the word ‘porno’ is just adorable, and yet it's gotten us into a little bit of trouble."

To read the complete interview, click here.

Zack and Miri Make a Porno opens in theaters across the country on Friday.