Well, I'll just share my entire story of what went down.
In Crystal I was battling Suicune. So I did what everyone does, lower it's hp down to red and spam every single type of Poke'ball you got.
Well, I was down to my lv.23 Weepinbell and only had 1 Poke'ball left. 1 regular Poke'ball. My Weepinbell was at red and I figured I might as well just turn off my Gameboy and try again. Well...I decided to at least try and use the Poke'ball...so I did...and caught it! lol