system
Given the following post, respond as if you're commenting on Reddit:
human
Best practices to avoiding impropriety?

As a woman in science, especially in the current #metoo era, I've always been acutely aware of men being sexually inappropriate with me (which has happened many times, both inside and outside professional settings). However, as my career has advanced and I've gained more power, I realize that now I'm in a very different position, one where I could conceivably be the person in power if a sexually inappropriate thing happened. It feels weird.

I work in a large, friendly, sometimes raucous research group; I have young men and women mentees who I directly supervise. Our group generally gets together socially once a week or so, often with alcohol and other disinhibitors involved. 

I'm wondering, what is my, and any other mentor's, obligation in such a situation? Should we recuse ourselves from socializing with mentees (eg no PI/postdoc, or postdoc/grad student, or grad student/undergrad socializing)? Am I overthinking all of this and as long as no one goes home with anyone it's all gravy? If a mentee makes a flirty statement, is it enough to roll your eyes and change the subject, or as the person in a position of power, do we (I) have an obligation to say, "hey man, let's keep it all above board"?

Other thoughts on the topic - how do we keep a cordial, collegial environment without crossing any lines?
gpt
I think you can model collegial socialization by drinking moderately and behaving well.

It would be a kindness to shut down impropriety. Let mentees know that it's not only unwanted, but unprofessional.