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2 definitions by Grant Carpenter

 
1.
The ratio of Biddys to Dunnys (guys to chicks) at a place at a perticular time.
4 guys and 4 girls is a b-d ration of 1.0

4 guys and 2 girls is a bad bd-ratio, and is a .5

6 girls and 2 guys is a great bd ratio, at 3.0.


"Man, this 2.0 ratio is awsome, gurranteed 3 ways for every dude!)
by Grant Carpenter September 29, 2003
 
2.
Guy. Generally cool guys.
Used as the opposite to the word Dunny.

Look at those Dunnys over there.

Man the Biddy Dunny ration is at 1/2, this is horrible.

Dude, we got a 3.0 B-D ratio, this is rockin'
by Grant Carpenter September 29, 2003