As far as I know, “whiskey dick” refers to not being able to get it up, losing your erection, or having a partial erection due to drunkenness.
To your original question, alcohol/drunkenness will often make a guy last longer. I think this is a relatively well known phenomenon.
One reason is desensitization: alcohol tends to numb sensations. This leads to needing harder oand/or longer stimulation to get off.
Another reason is mental state: alcohol tends to help people let go of inhibitions and nerves. Guys (really, people in general) can get anxious about their performance. Worry about cumming too fast is often self fulfilling; the anxiety and focus on the problem makes it happen. Alcohol usually lowers anxiety, keeping that vicious cycle at bay. It’s the same with erection issues. Alcohol can quell anxiety and make it easier to get it up… but it’s also walking a tightrope; too much alcohol and whiskey dick may occur.
Edit: oops, I’m not a lady. Just a dude who has experienced of all these things :p
I agree in general - if the situation is me, a straight man, with two straight women, it generally doesn’t sound appealing. I don’t want to be in a situation where I feel like I need to please and divide attention between two partners who are both focused on me. It’s a recipe for performance anxiety and one or both partners feeling left out.
That said, being with two women who are in to me and into each other could be a lot of fun. At that point, there is a lot more flexibility in activity and I would feel less pressure to be the one to make sure both partners are satisfied. Awesome activities: double blowjob, being on the bottom and eating one woman out while the other fucks or sucks on me. Fucking one partner while the other eats the third partner out, watching them two play with each other…
Or being with two women who would both enjoy taking a pause and just watching the action would also be a lot of fun. But I know it takes a certain mindset to be able to enjoy that and not feel left out and/or jealous.
I’ve always thought that a foursome with another couple would actually be easier to manage. This is especially true if everyone is straight in the scenario. This is because, despite there being one more person in the mix, it would be easier to “pair up” and switch around the pairing up such that people aren’t getting left out. Of course, the potential for jealousy and feeling left out remains in this scenario… just a bit less likely.