so when you spawn ct side you must locate the double glass doors near trophy room then throw a grenade at the doors (the grenade glitches the doors) then proceed to jump crouch backwards towards the double glass doors to enter threw them.make sure to spam jump while in the air it can be tricky but if you keep trying you will eventually get it.so after you get through the doors there is a button you must press to access the bathroom the button is located on one of the terminals in the room(its not hard to miss) find the button and press it and low and behold you will be granted access to the bathroom on nuke.this glitch has been in the game for years and is one of my favorites sad that not to many people know about it.