1. An aquatic species of the beluga narwhal race that inhabits the nether regions of the nordic sea. An ishboo is a rare and beautiful species that has a large tusk used for reproduction.
2. An endearing term used amongst friends to indicate their fondness of each other.
3. Used to replace other words such as fuck, shit and other "cuss" words.
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.