Quote from Stuart in the episode Spoiler: Gary Dies
Stuart: Oh, my God, look. Floss. Bert: Just hurry. It's getting dark. Stuart: Yeah, yeah, yeah. Excuse me, uh, how much for a foot of floss? Floss Vendor: Mint or regular? Stuart: Uh, let me get the regular. Floss Vendor: Oh. [As Stuart pays for the floss with a pack of Mac and Cheese, a masked figure with a rifle observes him] Floss Vendor: Thank you. Stuart: Oh, yeah, look at that. Can't put a price on healthy gums.