I am a subterranean chamber that swallows cold rain and spits boiling fury, tearing through the skin of the earth. Unlike a volcano that bleeds liquid fire, I only erupt with superheated water and blinding steam. Some of my kind scream every few minutes, while others sleep for centuries. What am I?

I have only one entrance, yet I am hollow all the way to my closed end. I am trapped in a dark leather prison, crushed by a giant all day. Yet my biggest fear is the spinning drowning machine, where I will surely lose my twin. What am I?

What's the difference between an oral and rectal thermometer?

I have a spine without any bones, And hair that never grows. I can sweep away a messy trail, Or paint where the river flows. I dance on canvas, hair, or teeth, To leave things clean or bright.

Sometimes given as a gift. Evokes deep feelings of love, nostalgia, and longing. Brings a rush of intimate memory and perhaps tender grief.