User blog comment:Ryan Stoppable/"Phineas and Ferb" Nominated for Kids' Choice Award/@comment-1852035-20110216120039/@comment-1478533-20110219213456

Incorrect. The longest word in the English language is the IUPAC name for Titin.

It's about 189,819 letters. "Methionylthreonylthreonylglutaminylarginyl (insert tens of thousands of letters) isoleucine"