Naybellium Theelium. A fusion of the strongest forms of "no u". Made by fusing nobellium uranium and nay thee. This comeback can be universally used making it the strongest trump card in any verbal warfare.
Me: you suck You:no you
Me:nobellium uranium
You: nay thee..... you cant comeback this
Me: omae wa mou shinderu..... NAYBELLIUM THEELIUM.