What is Sitting Big?
1.
reserving room for yourself in crowded places by making yourself seem larger (thus needing more room) when people are piling in to a enclosed space. This gives you breathing room after everyone has settled in or gives you a way to save a place for people coming late in locations where saving a space is nearly impossible.
Jen is sitting big in the eRUPPtion so that we can come later.
See
