A mayanero is the act of a sleeping male being awakened from his slumber by oral sex from a female.
"Yesterday, I took a nap at around 2 P.M., right after I had finished studying. Approximately one hour later, Janice slipped into my dorm and promptly delivered one of the sloppiest and loveliest mayaneros that I've ever had."
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.
FRIEND A: "Did you just take a stealthie of me?"
FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"