Do you know the meaning of Wtback(mexican)fudge-packer?

Question

...flicking his tongue at my buddy. "Wtback(mexican) fudge-packer!" he yells.
You should know that his friend is a mexican.
(I want to traslate it, so please expliain each word to me. Thank you.)

Answer 1

******* is an insulting, derogatory word for Mexicans. It comes from Mexicans crossing the Rio Grande trying to get into the United States, hence their "backs" are "wet." Fudge-packer is also a terrible insult. It's like calling someone gay in a very offensive manner. It comes from the practice of anal sex--whereby a man's erection is "packing" the "fudge," or fecal matter, in another man's butt.
The person who said this to your friend was very insulting, although he could have been joking.