Thank you friends ...
... but this is a well-behaved bureau.
I'm working as a pastor. I just cannot jump on [or around] people just as I want to.
On the other side: It is as cold in here as if the walls where made of (frictionless) ice. So jumping maybe would be a good idea. (In a wider sense.)
It's cold here too, but luckily not as bad as last year... Last year I was an unwilling participant in a real life version of the ice experiment, while carrying two bags of groceries, walking down what appeared to be a perfectly fine side-"walk". Ukemi takes on a new meaning as well. Boy did the people in bar next door have fun watching me get out of that one.