Pun is a form of word play that exploits multiple meanings of words to create humorous or rhetorical effects. During 1905-1908 in Paris, there was a neo-Symbolist movement where artists like Picasso and Braque were interested in puns and incorporated elements from popular culture such as advertisements in their works to challenge the notion of "pure" autonomous art. Puns disrupt sign systems by making words signify more than one thing, which can be humorous but also convey deeper meanings.