Debonerfication 

The instantaneous disappearance of a boner.

She was really hot, but the moment she started talking caused instant debonerfication.

Debonerfication by Chuckin' Up Deuces July 22, 2011

Debonerification 

The process where the erect penis becomes unerect.

I saw Dana and got a debonerification

Debonerification by jeujeu September 11, 2009

Debonerization 

When a scene or event is of such high eroticism that a full erection cannot be achieved due to the sheer scale of it.

That movie was so hot, it had a debonerization effect

Debonerization by Zooky2000 May 29, 2013