If I'm going to be doing chemically enhanced social interaction, my substance of choice is kratom. It's well suited to truly enhanced discussion, not just the louder discussion that alcohol helps with or the disjointed, randomly connected conversations you have on weed. Unfortunately, the only drugs I can buy in public places intended for shared social experiences are alcohol and caffeine. I'd love to start a legal drug cafe but that will have to wait.
Yes, I am shilling my own business, no that doesn't mean you need to mod me down (I seem to always get modded down when I talk about the benefits of kratom. But it is a medicinal herb with enormously untapped potential as a legal pharmaceutical. Another thing to work for, eventually.)