This is slang for Cray Cray Monkey Bae To The Max... it's when shit has gone so cray, it's to the MAX... and no, not the restaurant from saved by the bell, but actually MAXIMUM CRAY.
Holy gibbon finger! Deandrea just told me about his night with Shangela, that girl is CCMBTTM... stay away from her.
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.