BSF

How low do you hang?
Ball Sag Factor

How's the BSF today?

by FactRzerO August 1, 2003

BSF

"Bull Shit Foursome"
Four friends who often go out together on random crazy adventures and day trips.

Let's go out BSFing this weekend!

by Cindy5 January 24, 2009

BSF

The cliched phrase every guy tells to a girl when he wants her: Beautiful, Smart, and Funny.

Hey bro, did she say yes?
Nah, I did the BSF way too early

by Kukoo October 12, 2010

BSF

Someone who is a BOOB STARING FREAK. Usually straight guys.

"oh my gosh that chick has got a nice rack!"
"YOU BSF!"

by CoolerThanYou32197392183 January 23, 2009

BSF

BSF - Best Skype Friend

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

Ryan is my BSF. I enjoy sending him poems.

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!

by TheRealWord January 14, 2011

BSF

Ball Sack Fight

lets have a BSF.

by B&E productions December 17, 2010

BSF

Butt-Sex Friday, a time-honored tradition started originally as a joke in the CU that has grown into a near ritual. Simply put, Fridays are set aside for buttsex, feigned or real, and anal activity is less frowned upon.

Cam and Udara had mad BSF last week-Zhe

by Fbook Masta August 13, 2006