Sonic: FREE Kids Meal on Their Birthday! September 15th, 2010 By Kaley 1 Comment Would you like to have these great deals delivered right to your inbox? Subscribe to our email digest. Or if you use a feed reader, subscribe to our RSS feed. Thanks for stopping by! If you have kids ages 12 and under, you can sign them up for Sonic’s Birthday Club and they’ll receive a FREE Wacky Pack Kid’s Meal on their birthday. Check out even more Birthday Freebies that I’ve posted!