Since Corny is still relatively new to the Beyonding, he appears to be sweating in panel 4; those within the Beyonding do not perspire (it’s a “cheat”)
Again; why would being called a liar be such a big deal?
Radish-Hoof’s voice is based on that of comedian Jim Norton, for example, “Right On My Fucking Foot“
As a unicorn, Radish-Hoof is exempt from the deleterious effects of using foul language (see Sacred Testament 3.4-4.5)
In earlier strips, Radish-Hoof wears a silver fitting on his headstone; at some indistinct point in the future it was lost, and it’s possible that Radish-Hoof never knew it was there
First appearance: luckless stable boy Cox McCrackin, who thought Radish-Hoof was calling him for help