The Flying Karamazov Brothers give a new meaning to the word “practised”. Their first stage show in 1981 was called Juggling and Cheap Theatrics - a smart title that they could have kept for the show they bring to London’s West End, largely made of routines that this celebrated US comedy-juggling act have been doing for decades. It’s weird to see in YouTubes of their early performances some of the material I watched last night at the Vaudeville. Still, the fact is those old juggling routines remain mesmerising to the eye, even if their humour is as worn-through as the bum of Seasick Steve’s overalls.