You Barium.
He simply croaked!
It rises because the rest of the fishes are crying:'(
Urea!
Because it was Na HA! Get it? Because Na=sodium and N/A=not available. Seriously, this is good clean fun.
Because if you can't Helium or Curium, you Barium. (Heard it from Heimerdinger, League of Legends)
Breaking Bad