cushion blow 

To flatulate while sitting down and conceal the sound and smell into which you are seated. Typically a sofa, or seat in the car. Preferably a soft cushion.

Larry cushion blowed on the couch. We're going to need to have that fumigated.

cushion blow by Mr Trip1et July 11, 2014

Cushion the blow 

cushion the blow
to do something that reduces harm.
Etymology: from the idea of making the force of one thing hitting another less damaging by surrounding it with something soft

The way to cushion the blow is to raise prices slowly, not all at once.

Cushion the blow by bruceliu May 27, 2006