This is a variation of the rock, paper, scissors game that Earth children play. Two fingers represent sticks which defeat the hammer (presumably by poking the bearer of the hammer in the eyes), the hammer (fist) trumps fire by beating it out, and fire (three fingers) defeats sticks by burning them.
A six-legged beast with large tusks that burrows into the sands. Its eyes sit on stalks atop its head so it can peer out of the sands, everything else being completely covered.
When its prey comes near it leaps out and gores them with its tusks and gnaws on the bodies. It also often chases away smaller predators and takes their carrion.
This phrase indicates ten men- each toe equals one man. If a Martian were to say ‘one foot’ that indicates five men. Ten feet equals fifty men, and twenty feet indicates 100 men.
Or forever. This is a Martian phrase similar to the Earthling’s ‘until hell freezes over’.