Though the kitties usually get along just fine, some sibling rivalry does exist between them; Boo is a bit more outgoing, while Peach sometimes prefers to be left alone. This has given rise to a theory about the motive behind the incident with the pool.
"Boo always wants to play with Peach, but she’s a little mean to him," Lee said. "So he finally got his revenge."
Chances are, Lee suspects, the score hasn't quite been settled between Boo and Peach. If anything, the stakes have been raised.
"Peach will 100 percent strike back eventually," Lee said. "If Boo comes inside soaked, I'll already know what happened."