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1.
BDE
Acronym meaning "Best Day Ever."

Often used in response to someone telling a story that ends in the ubiquitious "FML."

Definition extrapolates to various other acronyms,
including BNE:"Best Night Ever," BBE "Best Beej Ever," or simply BE: "Best Ever."
Douche: I hate everything. Everything sucks. I'm so depressed. FML.

Happy Douche: Oh, that sucks. In other news, I found a $5 bill on the ground today. BDE!
by The Guy Who Still High-Fives November 10, 2009
 
2.
bde
Best download ever.
On a torrent site comment:

BDE. Thanks dopeman.
by vilaemail November 03, 2008
 
3.
BDE
BDE - Ball Draining Experience.
Yo man, yesterday I had an off the hook BDE with this chick in a storage unit.
by pmp020772 March 09, 2011
 
4.
BDE
Blowup Doll Experience
You might like having sex with her if you like BDE; she doesn't move much at all!
by Vrip March 06, 2007
 
5.
bde
bde is verb commonly used for abusive comment
" i'm gonna bde the fuck out of it"
" bd bd bd fucking e "
" call yourself a bde "
" laura go fuck your bde "
"smell my finger, it smells of BDE"
"BSC suck..."
by geekfuckmeister January 16, 2007