mastersoning 

When you guzzle so much cum that it seeps into your cervix, thus impregnating yourself.

After mastersoning many men for many years, I finally got pregnant with a bastard child

mastersoning by Franksgizz March 27, 2015

masterooping 

masturbating while you take a poop.

one day i was sitting on the toilet masterooping.

masterooping by chief121692 November 18, 2010

masterconing 

Masterconing was with my misses last night and she caught me masturbate while Smoking a marijuana cone

I was with my misses last night and she caught me Masterconing On the toilet watching midget porn

masterconing by Aerosal Surgen September 12, 2022