Semper is latin for ever or always depending on the context it is used in (always in this case). NI is short for Northern Ireland. SemperNI means always Northern Ireland.
SemperNI is sually used to showones deication to their country (mainly sporting events).
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.