Two words; Pillow Talk. The fact that there is an actual pony with this name amuses me to no end. I mean, it was probably seen as innocent back then, though. Tied in with slumber parties, and all.
Well to me, Pillow Talk will always be innocent. To me, it will always be seen as a response to lying awake at night, and needing someone to talk to...
I actually wrote a little something for it for the cutie mark/symbols thread. I will admit, I even had tears in my eyes while writing it.