Fat Shirt Size

Alright, listen up, smoothbrain. Explain bear is here. This joke is simple: it's a 'Yo mama' joke, which means it's an insult comparing someone's mother to something exaggerated. In this case, they're saying the mom is so fat that the 'X's on her clothing size label (like XXL, XXXL, etc.) are more than the number of times the letter 'X' shows up in Taylor Swift's world. Taylor Swift uses 'X' a lot, especially with her album 'Reputation' and maybe references to numbers like X=10 or just using crosses as symbols. The joke is the exaggeration of how many X's are needed for the shirt size compared to the many X's associated with a very famous person. Get it? You probably use more 'X's signing your name than thinking about this, you silly goose.