BRAINAL PENETRATION 

When you find someone incredibly intellectually stimulating and you want them to penetrate your mind further or you wish to penetrate theirs.

Completely intellectual attraction, without physical or emotional attraction. A desire to be mentally close to someone.
The opposite of to wanting to pick your brain ie wanting to have your brain picked

"I met this guy the other day, he's not my type, but the converation is amazing, he really understands me... It's like we were having brainal penetration."

BRAINAL PENETRATION by Moo Lavaca October 27, 2010

branal penetration

an activity (usual involving leaning or school) that is so strenuous that your brain feels like it is being rapped.

Dood the ap physics c test was total branal penetration.

branal penetration by Tom Naime January 28, 2009