I was going to give today a miss, but then I read, for the 17,248th time, I think, the phrase
given free reign. And now I’m as mad as hell, and I’m not going to take this any more.
There’s rain, the water that falls from the sky. That can be free, but no one thinks that
he was given free rain means anything interesting.
There’s reign, the rule of a king, or the metaphorical equivalent. One can be given the freedom to reign, I suppose, but think about it: what does it mean to be
given free reign?
Then there’s rein, the strap by which we control a horse. When we pull the reins in, we control the horse more tightly. When we let up on the reins, we exert less control. And when we give [the horse] free rein, we let it do as it pleases.
The phrase is
given free rein.
 No, it’s just a Network reference.