An instantaneous release of testosterone resulting from a feeling of extreme awesomeness or manliness.
Dude that breakdown just gave me the sickest nut rush! Lets go lift heavy objects and skin small cute animals!
by HawkDegleg January 15, 2012
When you jerk off quickly and quietly in an inconvenient manner or place because you just got really horny.
Mom: You've been pooping for a long time!
Me: I'm almost done!
Me in my head: Ok, looks like I'm going to have to make this a Rush - nut!
Me: I'm almost done!
Me in my head: Ok, looks like I'm going to have to make this a Rush - nut!
by Professor nigga April 16, 2021