Comes from the way pissed up folk say "best friend." To be a "bessfriend" for any length of time is incredibly
unfortunate. You attain this dreaded status by having a drunken person latch onto you and tell you all their problems, cry on your shoulder and generally kill your groove. Several times, through hiccups and sobs about ex partners, you will hear the words "You're like my bessfriend, you are." Note- you don't even have to really KNOW this person to be their bessfriend for the night.
The worst bessfriend situations occur when they are members of the
opposite sex. You either get
cock blocked or pussy locked all night by the weepy eyed, wretched looking individual clinging desperately to your wrist.
"Why didn't you come to the club
last night? We all
wondered where you got to. Did you go home?"
"No such luck. Some mental bitch in Yates's decided to make me her "bessfriend" for
the night, and I just could NOT shake her!"