Syncrofuck

Verb. sing-kruh-fuhk
The rare case of either twins or clones (or syncrofucks*) having sex with either twins or clones (or syncrofucks). The entire performance and finish must be exactly the same at the exact same time.

*noun - children from the act of syncrofuck.

"Hey did you see those twins at wet willies?"
"Oh, they're not twins, their fathers were identical twins who married identical twins. Then since both mothers and fathers were identical twins they decided to syncrofuck and have identical children."
"No shit?!"
"Just ask them."

Syncrofuck by MishaOdessa January 26, 2010

Syncofuck 

The act of two women having an orgasm at the exact same moment during a threesome.

The two women moaned loudly during their blissful syncofuck.

Syncofuck by Brianna_Ashlee July 24, 2009

Synofuckup 

When you mix up the usage of a synonym in a sentence

"An example of a Synofuckup would be using much instead of many in a sentence like 'There are so much people here'

Synofuckup by Corvo and Jeria November 24, 2021