CUNT

CUNT is a Blastoise captured in Victory Road during the Anniversary Red runthrough.

Etymology
The word "cunt" is a slang term for the female genitalia and is also used as an insult. The Mob, in their immature state, wanted to nickname a Pokémon CUNT because they found it funny. After the Moltres was nicknamed GYAOOOOO, they chose Blastoise to bear the nickname CUNT. This is just yet another example of the Mob's immaturity showing, such as referring to Cloyster as a vagina and laughing whenever a Pokémon reached level 69, a well known sex position.