1 definition by Rynokie

Top Definition
Interacting with someone who is masturbating, while you were already masturbating, either in person, via phone call, text, or internet.
I was wandering around jacking off when I walked in on Mike masturbating. He said it was a coincidence, but I think it was just fappinstance.
by Rynokie May 26, 2013
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.