look up any word, like guncle:
 
2.
A girl exactly the age of consent.
You know Marlena? She turned fuckteen today.
by Puggles February 22, 2013
 
1.
An indeterminate number greater than a few, but fewer than fifty.

Used to describe repetitive, boring, or pointless action.

"He has told that story fuckteen times..."
by ArloBigwater February 24, 2009
 
3.
An immeasurable amount of something...Similar to saying "umpteen", but with more anger or frustration.
I told you for the fuckteenth time, Outlet Runner doesn't suck!
by Nirvana_Girl October 21, 2011