Use a Splash Attack!
Ahh, as you said, the best part about this submission are the reviews. The fact that there are so many idiots who don't get the joke astounds me, but either way, I came to review this flash, and that I will:
This little gem is a simple flash with stiff sprites, little background, and no lip syncing. But Splash Attack is a fine flash, not because of it's graphics, but because of it's humor. You manadged to put plenty of emotion into Red and Blue with voices and a maximum of three sprites for the each characters, this especially worked well with Blue, whom was really the character who made most of the jokes. Your voice fits perfectly in this flash, and really was the meat of the movie. The way Blue says "Splash" is what really made me laugh for most of my time watching the flash.
The differnt lines that the two trainers had were also worth a few chuckles as well, but again, it was Blue's lines that really got me laughing.
The concept of two Magikarps splashing for all eternity is both original and funny, but next time , if you are to make a sequal, you could add more scenes to it so that it would help keep thing fresh as the never-ending movie went on.
Anyway, great flash, you deserve my 5.