smart on 

An engorged penis (or its metaphorical equivalent, a state of sexual or quasi-sexual arousal) that results from intellectual stimulation.

Baby, the way your tongue trips across the philosophical terminology and so cleverly articulates the existential quandary--you really give me a smart on.

smart on by joelmw October 23, 2010

smart on 

what a woman on crack says to you in macdonalds after asking if you're in a cult...

"hey, are you guys in a cult?"
"no"
"oh well...smart on!!!"

smart on by whoopie Goldberg January 30, 2008

smart-on 

See smart on.

It saddens me to think that the intellectually challenged are incapable of a smart-on. But a good, liberal arts education is the sure cure for their cerebral impotence.

smart-on by joelmw October 25, 2010

smart-on 

An erection caused by intense intellectual thought. Came to inception due to its rhyming with the word/phrase "hard-on".

Bill got a raging smart-on when he realized all of the work that goes into the creation of a single pencil.

smart-on by TronsauseFiveMillion December 7, 2010

Smart-on 

When you suddenly think of something awesome. Like a hard-on but with your brain.

Mike- we need some new ideas
James- OH MY GOSH I just had a smart-on! What if we build a waterproof phone!
Mike- THAT'S GENIUS

Smart-on by ImSoCoolLolJk January 1, 2013

them smart n***** on netflix 

Synonym of the show, "The Big Bang Theory"

Yo, them smart n***** on netflix is a good ass show

them smart n***** on netflix by trustmeitsreal November 29, 2023

smart one

smart one is just a sarcastic way of saying someone is a dumn nut.

"most of my friends are smart ones"...or "man u r such a smart one"

smart one by glonkabletotla June 9, 2009