[ What Erina thinks in her head: something like "aww, damn, Penny got me a gift, she bought me a thing when she didn't have to, that's thoughtful and cute. Penny's cute."

What Erina actually says out loud, with her hell mouth: ]

Oh shit, free stuff. [ God motherfucking damn it, Erina. She takes the present and gives it an eyeball. ] ... thanks. You, uh, didn't have to get me anything, so it's cool you did. Am I good to open it?