Bill the Cat is a humorous parody character from Berkeley Breathed’s Bloom County universe. In the comics, his usual spoken lines are minimal and comically garbled, with the most frequent audible sentiments being "Ack!" (often coming from hairball gagging) and "Thppt!" (an onomatopoeic raspberry). Over the years, the character has been depicted as increasingly mute or near- mute due to various story twists, but these two expressions remain his signature vocalizations in many strips and related materials.

If you’re looking for a quick tally of his typical phrases or want examples from specific strips, I can pull representative quotes or describe notable appearances. Would you like a short vignette-style summary from a particular Bloom County arc or Outland/Opus story where Bill the Cat features?