Used when you're away from your desk, but haven't gone far - If someone needs you, they should come and find you.
Usually used if there is a chance that you might need to render assistance to someone in a hurry, and your reason for being away is flexible and not so important that you can't leave it or even cancel it altogether.
"I'm awailable - just getting a snack from the kitchen."
"They should still be in the building - they said they were awailable. Probably just chatting with a friend."
"I'm getting some lunch. Seeing as you have that important call, consider me awailable if you need assistance, and I'll come help you out. I'll be down the hall."
A Shackteau is a humble, weather-beaten, structurally questionable shelter located in a spectacular or highly coveted place—Wales, Jackson Hole, Sun Valley, Crested Butte, coastal Maine, the Alps—where the building itself may be worth almost nothing, but the dirt, view, access, and mythology make it absurdly valuable.
In use:
Shackteâu - We thought it was an abandoned shed until the realtor called it a rare alpine Shackteâu with unobstructed views and listed it for $2 million.