Aside from giving a standard Petrie shuddering moan and fainting?
Petrie: (Thoughts: Oh no, oh no, oh no! A pretty flier says she loves me! What do I do?!)
Petrie's inner Pterano: (Easy now, Petrie! I knew this day would come. Now, do you remember what I taught you to say in this situation?)
Petrie: (Thoughts: Uh, I-I think I do. You sure that will help?)
Petrie's inner Pterano: (Have I ever steered you wro- err, I mean, yes. Yes it will. Now say it, dear nephew!)
Petrie: (Thoughts: Uh, okay then. Here I go!)
Petrie (out loud): Me uncle Pterano the most handsome bachleor in the mysterious beyond and you just his type, baby.
Petrie's inner Pterano: (Excellent, now give her my phone number.)
What would Ruby say if she were asked if she knew what a palindrome was?