It’s annoyingly cutesy, but still potentially noteworthy: before you head out to grab your lunch today, consider that popular sandwich purveyor Potbelly is celebrating it’s 30th anniversary with something they’re calling “Random Acts of Potbelly.” Can we assume this will include random acts of giving away free sandwiches? Let’s friggin’ hope so. Because random acts of slaps across the face would be a lot less satisfying. So like we say, there’s no guarantee you’ll get…