As for the Steelers-Browns jawing at each other ...tradition.
birds gonna fly, fish gonna swim.. Steelers/Browns will continue to show their love for each other..
.. that is a fact of life . Nothing ever changes that, even when one is 16-0 and the other goes 0-16.
As for the sense of humor, they've trained under the best .. Bob Hope, and a couple other areas guys .. Tim Conway and Drew Carey.
For some reason .
you learn to fine tune your inner comic self living up there...