Haven't got two original ideas to rub together between the whole lot of them.

There was a sound like two stones being rubbed together.

They had to be broken and the heads rubbed together.

My thighs rub together when I walk, thank you very much.

These he also slapped down on the table, then stood back, his hands once more rubbing together.

You could do things like making a fire by rubbing two sticks together until your hands dropped off.

If the oil is too thin, then the parts will rub together and create friction.

Terry, who hasn't got a brain cell to rub together.

These develop when the ends of the two bones rub together.

"Would anyone with two rational brain cells to rub together believe what really did happen?"