Non Sequitur
The Fallacy
Saying something that has absolutely nothing to do with what was just said before.
Why it's wrong
It's like talking about apples, and then suddenly deciding that because apples are red, cars should fly. The second part doesn't make sense based on the first part.
Example
I really like eating ice cream. That means I must be excellent at playing soccer!
What the Fallacy?! (ELI5 Edition)