How about:
Don't do it again....or else *ominous chuckle*
In seriousness, it's bad RP to speak in animal form. The shame of knowing you're doing bad RP should be punishment enough. We're not in the habit of putting people in RP jail. All we ask is that you try to stay in-character as much as possible, and when that character is 4-legged with sharp canines, fur and pointy ears, do as is appropriate for that form.
But yeah...if that's the worst you've done....you're ahead of a lot of people.