Pick-up lines:
"Hey, baby, want to perform a frolis maneuver with me?"
"You be Alloran, and I'll be Visser Three."
"Wanna see my morphing suit?"
"Better buy some oatmeal, 'cause things are about to get cuh-raaaazy!"
And the obligatory dirty one:
[spoiler]"I may not be an Andalite, but I still have a mighty tail."[/spoiler]
Rejection lines:
"Go away for three days. I have to make sure you aren't a Yeerk."
"Did it hurt when you fell from the sky? Because you must be an alien."