Either spoon it into a piping bag to pipe into heart shapes, or press gently into a heart-shaped cookie cutter.
To climb in this fashion a climber will hammer a peg (or "piton") into a crack, wedge chocks – pieces of metal of various sizes and shapes – into it or place a skyhook (a very small grappling hook) over flakes of rock and edges.
Back at the beginning of the show, across a floor whose size is accentuated by a geometric pattern of yellow, grey and black shapes that optically flip perspective as you look at them, a ventriloquist's dummy sits on a shelf, dangling his legs in the air.
"They're getting stretched apart, and they snap back," says Weiss. "Sometimes they snap back into their natural shapes".
In America, male body shapes will wax and wane – over a period of half a decade, they might go from the "jock" to something skinny and then creep back to the current vogue, the "swimmer's" body – that is, not such a meathead that you could beat anybody up, but not so lanky that you look pubescent.
It is not easy to put into words what Mondrian does when he slides together black lines and coloured rectangles in his cosmic game of shapes.
The whirling black shapes rise from their large untidy nests and out over the fields.
So will 2014 see artists of various shapes and sizes chucking albums into the ether and hoping for the best?
But my longing to practice architecture bubbles up inside me every time I remember that John Ruskin called it "the inescapable art" because it shapes the lives of people who never even think about it.
This problem has always haunted cartographers and the shapes of world maps have typically been hugely diverse, ranging from hearts......to half-circles......to squashed turnips.
The tongue itself is taking infinite new shapes in billions of mouths.
