look up any word, like lemonparty:
 
1.
The scientific term used to explain the phenomenon during which a heterosexual male achieves an erection while in the company of one of his male friends. This may only occur while engaging in all-male activities.

Also see broner
As a young adult getting a piggy back ride from my uncle, I achieved a nohomo erectus.
by LMBH Factory November 05, 2011