On Wednesday, April 23, "13 Going On 30" turns 10 years old. In honor of the reverse-coming-of-age time travel romcom (and all 13 year olds now going on 23), we have spliced Jennifer Garner's recreation of "Thriller" into 11 easy steps. Without further adieu, please let her teach you how to dance, nay, how to live via the GIF-ed cuts of the sequence below. Step 1: Turn to the side and take four steps forward and four steps back, starting with your right foot first. Bob your head on beats one,...