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1.
The act of considering who one is going to fap to.
Oh, doing a little fapplication research. Put them back under the mattress before my mom notices.
by totallynotabigdaddy October 28, 2010
 
2.
An application on the popular social network, Facebook.

Also a shortened way of say "Fucking Application"
"Dude did you see that new app on Facebook?"
"Yeah bro, that's my new favorite Fapplication!"

"Dude there are so many fapplications on Facebook now. It's impossible to find a good one."

"FUCK! THIS GOD DAMNED FAPPLICATION NEVER WORKS!"
by Mak J-Bizzle December 02, 2008