Yo Mama and The Titanic

Alright, listen up, you, who thinks 'yo mama' is an original joke, you need to understand a few things. This joke is about how extremely fat someone's mother is, so fat that the Titanic looks tiny to her. It's using exaggeration, or hyperbole, which is a literary device that makes something sound way more significant or bigger than it is in reality. It's kinda an insult, but a playful one. Get it?