[dayglored]

> And no, I’m not telling you why ;)

I saw this happen hundreds of times (decades ago when I was "going out" a lot). I generally attributed it to one or more of the following:

• Gossip about the guys in the group
• Check each other's makeup/clothing/hair
• Defend against unwanted attention from strangers in the bathroom
• Have a quickie lesbian encounter

Any of those ring a bell?

[Bigg Red]

To tell you the truth, I cannot give you a reason; we just have always done that.

[TheWriterTX]

You are very close.