P-P-P-Chan! He's Good For Nothin'
Pi-pi-P-chan Roku Namonjane
"It turns out Ryoga is also a victim of Jusenkyo, turning into a baby pig every time he is splashed with cold water. Akane, who does not yet know this, vows to keep the piglet and let it sleep in her bed. When Ranma hears this... " (source)