Mainstemmed 

To stick ones dick down a throat so far that it blocks the airway from breathing.

I mainstemmed this tinder date the other night and thought I was going to have to call 911.

Mainstemmed by Jr0ckk April 24, 2019

Mainstreamed

Doing something to appease the masses as opposed to keeping it the way it started.

Corspe Circus was selective about their stalkers, now they allow anyone in, They Mainstreamed.

Mainstreamed by Kryptic916 December 18, 2011