TV Aziz Ansari and Big Sean Tease an All-New 'SNL' With 'Medium' Kate McKinnon By Raphael Chestang 6:53 PM PST, January 20, 2017 NBC Both Aziz Ansari and Big Sean will appear on Saturday Night Live for the first time this weekend, and we have new promos for their episode.In the clip, cast favorite Kate McKinnon tries out a new nickname patterned off of the "Blessings" rapper."I'm Aziz Ansari, and I'm hosting Saturday Night Live this week with musical guest, Big Sean," Ansari says."And me, Medium Kate," McKinnon interjects. "Sometimes petite, depending on the store."Sean takes it upon himself to inform McKinnon "that's not how it works."WATCH: Aziz Ansari to Host 'Saturday Night Live' for the First TimeIn a second promo, McKinnon promises that even though she might not be ready for the upcoming episode of SNL now, we'll be able to count on her at show time."I have a thing," she says. "It involves a specialist and my feet, but I will be ready if all goes according to plan."SNL airs this Saturday at 11:30 p.m. ET/PT on NBC.EXCLUSIVE: 'SNL' Alum Jay Pharoah Says Watching Donald Trump Is 'Like WWE'