Every. single. line. is open for any interpretation.
(With that I mean I wasn't even thinking of the whole Spikie Pie stuff going on in the comments. More like Pinkie being random.) WHY:
'Luna eclipsed' had a lil' joke where Scoota-pie layed and egg when running away from 'Nightmare moon'....but the egg was exactly the same egg the animators used for Spike to hatch from in 'Cutie mark chronicles'
Hey, if some of ya'll think Spike has a mane-fetish from a tiny in-between joke than I can make Pinkie Pie the mother of a dragon.
Don't worry though.
Believe believe the dragonborns come.
FUS RO yay
Edit: Eh, yeah, I'm removing some comments that are rude to the characters....