Woohoo! Sonic will be offering Half-Price Sonic Milkshake Blasts all day long tomorrow (9/30). (Valid on size small and medium only, limit 2 per transaction).
There is no coupon needed to get this deal, just mention the deal when ordering. (You may want to call your local Sonic to make sure they are participating before you head out).
Yummy!
Thanks, Money Saving Mom!