Stephen Fry Fell For The "Marvel's Agents Of S.H.I.E.L.D." Advertising
That's almost certainly what's just happened. Probably.
Stephen Fry saw a billboard appealing for witnesses about an extraordinary feat in London today so he tweeted it.
The billboard is in fact part of some clever marketing for Marvel's Agents Of S.H.I.E.L.D. which begins in the UK tonight.
He quickly realised his mistake, realising that a man jumping from a fifth floor window would almost certainly die.
Also, Batman is a DC character, not a Marvel character.