Definition 1) It's parked if...it's truly a can't miss putt. Not an easy putt that we should all make, but one that even the worst of putters can make, requiring no putting skill whatsoever... a
n00b sinks it with wind in his face. Just 'cause it's easy, doesn't mean it's parked,..just means you didn't blow an easy putt.
Definition 2: It's parked if... Mother Nature doesn't decide if you Duece or Par. If it's parked, you can sink the putt, even in a hurricane...consistently. I've seen strong wind mess up putts from 6' or so, they weren't parked.
Definition 3: It's parked if...you feel obliged to tip the Valet.
If it's remotely conceivable someone could miss it, it ain't parked.