I came across a phrase given by Lennon during his bed-in session. Here is the context
Also, of course, we live with rattlesnakes. You just can’t go thumping through the brush, thinking of what you’re going to do tomorrow. You have to realize that you’re intruding on their territory.
What does go thumping through the brush mean?
"To thump", as defined by Merriam-Webster is:
to hit or beat something or someone and make a loud, deep sound
to beat forcefully
to walk or run with loud, heavy steps
Think of a male gorilla, thumping his chest. Basically, it means to make a whole lotta noise, which is rather rude to the snakes if you're thumping or stomping around in their territory.
