brain boner

something that strikes a chord in someone’s thinking, creating a spur of “enlightenment” and stimulation in knowledge, especially in subjects like philosophy & logic.
john: hey, have you seen that recent philosophical discussion between xxx and yyy on youtube?

peter: yeah, it was so good it gave me a brain b-n-r.
when you are so intellectually stimulated your brain gets a b-n-r.
you: did you guys check out my new 3d tv?

me: yeah, major brain b-n-r.

used when describing something that intellectually “turned” you on.
when you are talking and then have a random smart moment.
“your mom just had a brain b-n-r about robotics”
s-xual arousal that comes from enjoying someone else intelligence.
guy1: have you seen that girl? she is incredibly intelligent.
guy2: yeah, i would go over an horde of blood thirsty aliens to have her. i have an incredible brain b-n-r.

girl1: i can’ t belive the way he explained heisenber uncertainty principle.
girl2: yeah, he gave me a brain b-n-r since the start of the cl-ss.
a strong liking towards a member of the same gender, in a non-s-xual manner. a closely bonded friendship. similar to a “bromance.”
ted: “hey where has phil been lately? ah, probably shackin’ up with some l-ss.”
josh: “i really don’t know and it’s kinda b-mming me out. we used to do everything together. it’s kinda like cheech without chong.”
ted: “heh sounds like you’ve got a total brain b-n-r for him!”