"By this time, soldiers of the division had adopted an arm patch depicting a green snake smoking a pipe, a pun at a pre-war joke that went by saying it was more likely to see a snake smoking than a Brazilian fighting in Europe. However, according to many Brazilian veterans, the slang "the snake is going to smoke" was created among the troops meaning that a fight was about to happen."

No šejienes: http://www.geocities.com/Pentagon/Bunker/3351/campaigns/brzedit.html