After fielding a pair of questions, Franco noticed that his Pineapple Express cohort Rogen was randomly sitting in the audience.
"I'm just here to see the show in general, I didn't know you were hosting it. I put my name in the lottery for SNL tickets and this was the week I got it," Rogen said, adding of the musical guest, "Luckily, I'm a huge SZA fan."
Rogen and Franco next began bickering about why Franco – now a four-time SNL host – had hosted the show more times than Rogen, who has two SNL appearances.
"Why don't you ask Seth why the movies I do alone like 127 Hours get nominated for Oscars and the movies I do with Seth get nominated for a Stoner Award," Franco retorted.
Hill then arrived to also point out that Franco had hosted more times than Rogen. When Franco resumed the Q&A portion, he noticed Steve Martin sitting in the balcony portion of the audience, drinking a large soda.
"James, I want you to know, I used to stand on that very stage, in that very spot where you're standing, 'I used to host Saturday Night Live,' I used to be the center of attention, and I gotta say: I resent it, just a little bit," Martin yelled from above.
Franco's brother and Disaster Artist co-star Dave Franco also made a surprise appearance during the "Reunion" sketch: