Artist/überdoodler Chi-Yun Lau, a senior designer for an online gaming company, lives in Somerville and likes Batman and Werner Herzog flicks. Illustrator and graphic designer Dave McMahon likes guitars, comics, and girls (in no particular order) and has done work for PBS and Nickelodeon. Both of these great visual minds traffic in Technicolor-caliber hues and mix graffiti styles with surrealism and hyperapocalyptic imagery with an assured hand and a winking sense of humor, but they hardly think alike. See what a difference a pen or brushstroke makes when their work is mounted together at Space 242 (242 East Berkeley Street, Boston). The show is called “Secret Prize Inside” — and yes, it’s as fun as a box of Cracker Jacks.
