Four friends who often go out together on random crazy adventures and day trips.
When you have a best friend, who is on skype.
This could change if you have a better friend on Facebook or MSN
BSF is only related to Skype
Ben is not a good BSF he talks to other people on skype more than me.
Ben - Hey will you be my BSF?
Travis - No how could you say that? I already have one!
Four friends who often go out together on random day trips together.
When two best friends are so close that they consider themselves as sisters !
- Yeah! They're BSF s :)