One should never harbor the intention to harm others, yet must always be prepared to prevent harm from oneself.
Knowing that the chubby boy's father was in Saint Blue, Lance recorded some of the boy's deeds with a Memory Stone and sought to tattle to his own father?
Crying out to him as 'dad,' if he were actually cruel to this fatty, would the boy call out to him as 'dad'?
"I'm not even dead yet, and you little bastard are already in a rush to acknowledge a human as your dad?"
The Bronze Pureblood Giant Dragon Melbourne stood up, took a belt from his Spatial Ring, and chased after the chubby boy to beat him.
The chubby boy ran around the sofa, shouting to his 'dad' to listen to his explanation while doing so.
But he already called someone else 'dad.'
Explanation my ass.