1)to be completely enamored with someone/something.
2) the flighty exciting feeling you get when you think about/see the object of your affection.
3) romantically excited (i.e.: aroused)
4) the ever increasing acceleration of heartbeat and body temperature as a result of being engulfed amidst the exhilaration and joy of being/having a romantic entity in someone's life.
When he smiled at her, the rush of warm, fuzzy, excited sensations that filled her made her realize she was completely twitterpated with this man.
Gir is the greatest cartoon character to ever be made. He is soooo much cooler than everyone. Hes hot wearing his dog suit, flying the pig, or as his robot self. Hes the reason that Invader Zim was on air so long.