A new promo is out for season 16 of “It’s Always Sunny in Philadelphia,” and it looks outstanding. The legendary FXX comedy has been a hit series since it first premiered in 2005, and it’s remained one of the few shows on TV that isn’t afraid to push the envelope.These days, comedy is about as vanilla as it gets. Thanks to the woke mob, many in entertainment worry about whether or not it’s legal to even laugh anymore. “Always Sunny” and “South Park” have long carried the banner of just not carrying and doing whatever they want. It’s clearly working because “Sunny” returns for season 16 next week, and it looks like it will be a fun time.