Seriously khalil !!
That was my friend reply soon as i exploited the facebook tag function over her account .
What is this exploit khalil !?
ok, as we know users can tag their friends and either their friends of friends on their posts, however the target tagged user will have the ability to remove his tagged account from other users posts .
The fun was through exploiting the tag function to create a non-removable tag. where you can tag your friends and friends of friends in non-removable posts .
STOP!! i know what you are thinking, the answer is YES! you can tage thousands of facebook users (friends, friends of friends) on non-removable posts, posts may contain images/videos/text/links .
how fun is that !!!! for many geeks 
Timeline Report :
1- First report was on : Jan 11, 2015 1:14pm
2- Reply back on : Jan 16, 2015 9:40pm, asking to clarify the steps to reproduce this behavior!
3- Second report was on : Jan 17, 2015 12:38am
4- Reply back on : Jan 19, 2015 9:56pm, saying " We are sending it to the appropriate product team for further investigation".
5- Reply back on 31/1/2013, asking to provide my payment details .
GAME OVER !
New Level : https://www.facebook.com/photo.php?fbid=10153107875693885