Forget making hearts with your hands – that’s so 2012! Triangles and quadrilaterals are the way to go.
This is quicker than getting whiteboards out, can be used as a memory aid and keeps mischievious fingers busy.
The basic L shapes (my assistant had been busy with felt tip pens before being photographed).
Index figures and thumbs together.
Index figures together, thumbs overlapping.
Index fingers and thumbs joined at 90 degrees.
As for the rectangle, but opposite angles equal (as opposed to 90 degrees).
Thumbs part way down index fingers at 90 degrees.
As for the square, but opposite angles equal (rather than 90 degrees).
Index fingers together, thumbs together, all pointing upwards.
Index fingers pointing up, thumbs pointing down.