LUGs may be more common than male GUGs (although I've never kept track), and may have different reasons for their actions, but I've seen more than my fair share of GUGs, as well, although often, they don't resolved until some time after college graduation.
sitetest
Women can pull the old “let’s go to the restroom together” and no one will bat an eye. Now if two guys did that there is something going on there.