pkpk was crying last night and now her eyes are swelled up.  Tears are strange; you cry when you're happy and when you're sad.  This discussion of tears reveals a terrifying plot!
When you're happy, they 
fall like rhinestones,
Si estás feliz, caen como circonios
Si estás feliz parecen circonitas
Quando você estiver feliz, as
 lágrimas deviam ser tipo estrelas.