Bierrum 

A person who is tall; often called "Tree".

Me: Look at that kid, he's so tall!

Friend: Yeah, he's a Bierrum; what a Tree.

Bierrum by bdaforreal March 12, 2010

bjerrum length 

the distance at which two people stop being attracted to each other, i.e. your radius of attraction. the larger the length, the more women want to do you.
(derives from physical chemistry)

Because Jon's bjerrum length was too small, jen was repelled from him and would not sleep with him.

Bobo does not get any ass because he has such a small bjerrum.

Even though Smith is fat, he has a huge bjerrum and thus still gets girls.

bjerrum length by Merman November 22, 2005