A combination of people, who, if hanging out together, would create an awkward and hilarious group dynamic. This often happens when combining different social circles or worlds doesn't go as smoothly as one would hope.

When you eat dirt for the first time and leave your family to build a shack in the woods

(n.) A collection of people at some event who don't really belong together as a group. Perhaps you are going out with two friends from different friend circles, and one of your friends brings another friend who you don't even know. Loomgroups are usually really awkward, but can potentially become real groups.