look up any word, like fleek:
 
1.
BSE
Best sex ever.
Charlie: Are you ready for some BSE tonight?
Genna: Yes sir.
by KMMMM March 12, 2009
 
2.
BSE
Because of Society, Etc...

The reason given by closeted homosexuals to explain why they won't publicly reveal their sexuality.
Todd: Why won't you just leave that stupid beard of yours and run away with me!?

Mark: BSE.
by spinosaurus November 12, 2009
 
3.
BSE
Best Sisters Ever
BSE could also be described as The Puente Sisters
by Scarletlady06 February 15, 2012
 
4.
BSE
bovine spongiform encelopathy other wise known as mad cow disease
britain suffers from bse
by culturalstudent July 02, 2003
 
5.
BSE
bee-es-ee

abbreviation for: Best shit ever

used widely on the internet to describe something fantastic.
hellokitty3000: hai Todd!!!
Todd: hey
hellokitty3000: wutssuuup???
Todd: not much. eating some cereal.
hellokitty3000: oh my goodness i love cerealz!
Todd: for sure. its the bse.
by maggieb43 January 03, 2011
 
6.
BSE
When somebody overuses Best Song Ever.
Jeff- Dude that song was totally the best song ever
Me- Come on man, you totally BSE'd every song on the album
by Pa2 Griggles August 14, 2009