It's his STUTTER man! LOL
I love that one. He falls off a bike... "He's an old man with a stutter!" He tells a whopper about uncles and cannibals... "He's got a stutter!" He falls flat on his face on stage... "it was that flat sandbag, and he's got a stutter!" He tries to sit down minutes early during the clapterfest in France... "He's fine, it's just his stutter again!" He is led away by the Doctoriest Doctor of all the Doctors in the World, the Doctors' Doctor, when you really need a doctor you don't listen for the TARDIS you call Doctor Jill, before the ceremony is remotely over after squatting for a few minutes while people clapped and Macron has to greet our WWII veterans in his stead... "It's his STUTTER!" He says his son died in Iraq, "It's a stutter!"