Definitions by Toumbraider99

Half neilson 

When someone has a half boner

She was hot, but she only gave me a half Neilson

Half neilson by Toumbraider99 June 28, 2018

Full neilson 

When a males penis us at its largest, from an having an erection it is called a full neilson

It was aukward because I had a full neilson when I stood up.

Full neilson by Toumbraider99 June 28, 2018