The giggle fit you have waiting to yell "SURPRISE!!" at a friend's birthday party. Also, waiting to see a friend's face after a particularly excellent photo-bomb.
Example: "Holy shit, I'm so prankxious right now! I can't wait to see his face when he realizes!!"
Franxious - when you're so unbearably excited about the fact that it's Friday that you can't work, and simultaneously worry that you're going to get abominably shit-faced much too quickly and peak too soon. This may, with diminishing regularity, also occur on a Thursday (Thranxious), Wednesday (Wanxious), and so on.