I was once walking down the street in the middle of the day. There were 3 young men very cheerful and little bit drunk walking towards me. As I was preparing to pass them, bit worried if I'll have any trouble with them one of them in drunken cordiality looked at me and opened arms for a hug. We briefly hugged smiled and continue going our separate ways. Experience was very weird but pleasent. I think bit of positive human contact with no strings attached is missing from my usual daily life.