The process of beating/batting ones self off, in form of male masturbation to orgasm. Performed in order to commence a nap which may last from early afternoon to late evening.
"Can't wait to get home from work and have a Batnap!"
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.