"We were having lunch, me and Chris Pine and Benedict, and Benedict said, 'I'm really sorry about that, earlier this morning, I kept getting it wrong...I think I was tired, and the ions in the air were getting to me.' But it was like, no! Nooo, they weren't. He was in so deep, he believed it so much he was starting to get a headache....we wrote out this little form that he had to fill in saying, 'I, Benedict Cumberbatch, hereby accept that I must wear the topical emollient neutron cream, and also accept that it is a completely fictitious thing and I am an idiot,' right? So we give him the form. He reads the form. He SIGNS IT, and he gives it back to production. And we're like, 'well, what do we do now?'
ONTD, what's the best prank you've ever pulled? Once, I filled my boss's office with 700 inflated balloons while he was on a business trip. His reaction upon his return was solid gold. Also, I once convinced someone that I was on a date with that I was in witness protection. Suffice it to say...that date did not last.