What is a Sadist?

[ZeeJustin]

IMO you are both wrong. The key is where the pleasure comes from, regardless of whether or not pain is inflicted. Most frat guys prolly find slapstick stuff funny, because it's slapstick, not beacause people are suffering.

FWIW, the difference between the discomfort your friend talks about and the cruelty you talk about is arbitrary. Discomfort is just a minor amount of suffering, so in that regards, it would still qualify towards the definition, although on a smaller scale. But again, the key is exactly where the pleasure is derived from.

Edit: This should be obvious, but based on the responses of this thread, it seems like I should say it anyway:
Words have multiple definitions. The definition you are debating is the second one you listed above. Only one of the definitions explicitly requires things to be sexual, so Whiskey is clearly wrong.