Everybody who watched Saved by the Bell lists this among their highlight reel:
"I'm so excited! I'm so excited! I'm so... scared!"
If Jessie gets like this after a few over-the-counter caffeine pills, I'd hate to see what cocaine or meth would do to her.
Jessie's freak out is just as hilarious now as it was circa 1991. Somebody else obviously thought so too, hence this awesome video: