Here is Picabia's The hot eyes (on the right):
The inscriptions are 'Homage to Franz Jourdain' (one of the founders and the first president of the Salon d'Automne), 'Acknowledgements to the Salon d'Automne', and 'Out of onion comes strength'.
I do like that hand.
Not only did this picture make headlines because of its plagiarism of an engineering drawing but it also prompted Franz Jourdain to issue a press release reassuring the public that there was not, in fact, an explosive device behind it that was timed to go off during the opening, as was rumoured.
Picabia painted over this picture, with the appropriately named Fig leaf:
Interestingly, he didn't overpaint it with white first and then do the figure, but rather did it the other way around – the figure first, straight on top of The hot eyes, and then the background.
Here endeth the lesson.