Revenger bro here is the trick:

1. Click on this link :

www.proxfree.com/

2.Inside the box just write
down YouTube.Com and press Enter,
Now youtube open and watch videos and Enjoy

www.proxfree.com Is Also Banned By PTCL Management and P.T.A So This Trick Wont Work.
When You Write That Site, It Appears:

Damn ,

YouTube Is Banned From Pakistan By P.T.A,
Any Solution ? Pls
I Didn't Even See The Videos Upload 2/3 Days Before By Odedara,Joker Etc..

Use This Website www.4everproxy.com and Write Any Youtube Link In The Bottom of The Page and Enjoy ! This Website Is Not Banned.