(1) An instance in which a person intentionally gags him/herself on their sexual partner's erect penis while performing fellatio - generally as part of a deepthroat, facefuck or, in some cases, the Brazilian Mongoose - in order to vomit on his groin and the surrounding area. (2) In abstract usage, an act that one must perform to fulfill a loathed obligation.
Get on your knees and give me a New Mexican Latte!
Jesus, my bitch gave me a New Mexican Latte last night!
Man, you got fucked, looks like you're going to be giving a shitload of New Mexican Lattes this week.