help with some slang translation anyone?

[deyounger]

So my boyfriend lived in Monterrey, Mexico for two years and often tells me things in spanish. I understand some things, but definitely get lost when he begins to use slang. What does this mean: Siendo traido arrastrando la cobija a <insert name here>. He said that only people from Mexico City would understand the real meaning of it instead of the literal translation. Any help would be really appreciated! Thanks!