When Roger gets irritated because Francine brought him a taco from Taco King instead of Taco Barn while they fake his kidnapping in "Frannie 911", he throws it at her and has a temper tantrum. Roger's cover story for getting a sample of xenoplasm in "Office Spaceman" involves spotting an alien at a Taco King salsa bar. Snot mentions taking Roger's persona of Jenny to Taco King on a date in "Jenny Fromdabloc".