I know it's not the same level you're asking about but I have a mild form of Aspergers. I only know how to socialize in ways that people will accept because growing up I had to rationally and logically deconstruct people's behaviour, create rules for myself, and then apply them. Socializing has not been an intuitive process for me at all. In adulthood, my ability to seemingly connect with people has been a product of years of observation, hard work, and determination. In some ways I am just an expert at mimicking the patterns I see around me even if I am not intuitively grasping the purpose of it. It's ironic that I am gifted linguistically yet the subtle meanings behind so many sayings and actions goes right over my head.
When I smoke pot it becomes a lot harder for me to navigate the social world and especially new social situations. It's because the initial high reduces my ability to apply logic, so the social rules stop making sense again. If I'm with people and about to enter a really busy social location I will usually have to wait outside a bit for the pot to wear off, or otherwise enter with the understanding that I won't be saying anything at all for a while.