A combination jackoff session, snack, then a nap. Usually in that order.
Sally Balls: It's 5pm, you're still in your robe?
Tony: It's my day off. Been jacksnappin' all day.
Sally Balls: Must be nice.
noun. A person who is a jackass and subconsciously knows that they are acting in that manner!
Look at that man over there yelling! What a Jacksnap!