How to build walls?

[ZenRaiden]

I think

 

[Cognisant]

Loan them money, then when they go to pay you back ask for a market equivalent rate of interest and refuse to take any payment unless they pay in full with interest.

I call it "Bogan be gone"

 

[Rook]

stone by stone

 

[scorpiomover]

Ask some trolls to build a wall for you.

Say you'll pay them in hobbits.

 

[EndogenousRebel]

therefore you are, building walls.