flake watch
watching for the 1st snowflake of a major storm, while sitting in a bar enjoying a few drinks.
I'm on flake watch. As soon as it starts to snow, I'll have a few more drinks so all the traffic can get out of town.
flake watch
When you're closely observing someone who you believe might flake on you, you have them on flake watch.
I made plans with Liz last night but I feel she may bail out. I've got her on flake watch