English to Polish Art/Literary

Stick that in your walking stick and walk with it.

(he finally told his friend that he did a heist for a mob.
Explanation for the line above:
One of an endless number of variations on a theme (another would be “Stick that in your pipe and smoke it!”) conveying a self-satisfied “Aha! Now I’ve really told you something shocking!” or “Now I’ve really given you something to think about!” Don’t translate literally.