yeah, it can be called plenty of different things..shotgun (n): the hole in the side of the chamber of a pipe (generally glass) used for smoking marijuana and other herbs. the shotgun is covered for the majority of the hit, meaning that the smoker inhales less air along with the smoke.

shotgun (v): to blow marijuana smoke into someone else's mouth. this can be done by either blowing into a blunt or a joint and forcing the smoke out the other end or by inhaling the smoke and then blowing it into another's mouth.

1) "Make sure you cover the shotgun when you hit that"
2) "Can we shotgun this hit?"

thats from urbandictionary.com, but yeah with so many people on the forum and so many different countries and areas slang can mean alot of things,...sorry for the confusion