This happens to me all the time, my company hasn't allowed youtube (plus a swathe of other stuff). But youtube gets me annoyed the most. I usually get a hyped 'check this out' friend a friend on IM, then I have to spend what feels like an absurd amount of time swapping accounts and fighting against chrome modals which is always prompting the wrong account details for login. When I'm finished I have to log out and back into my work account. Total pain.