syncrofart 

A loud fart that you let out just as some other, louder noise is heard which drowns the noise of your fart. It requires very good control of sphincter muscles and an acute sense of timing.

As the fire door slammed, I let out a syncrofart.

syncrofart by Jon Osenada July 22, 2012

syncromatisity 

A confluence of inner and outer, subjectivity and objectivity.

Visual art. An artwork can be seen to show syncromatisity when it has a distinct and uniquely recognisable quality that is both particular and universal.

syncromatisity by Artsensive May 16, 2014

syncrobation 

Syncrobation is when your masturbation clock synchs up with your bud's and the cumforting truth emerges -- probably through some kind of chat -- that you have both just simulwanked. If you are within high fiving distance though that truth becomes terror or leads to sex.

"Dude, how's it going?"
"Good. Just finished jerking off, about to play some videogames."
"Dude, me too!"
*both* "Syncrobation five! o/ \o"

syncrobation by Raoul Duke... Nukem October 4, 2010