Tornadoes come in many shapes and sizes, but they are typically in the form of a visible condensation funnel originating from the base of a huge storm cloud, whose narrow end touches the earth and is often encircled by a basal cloud of debris and dust.
Soda jerk. A soda jerk (or soda jerker) is a personâtypically a youthâwho operates the soda fountain in a drugstore, often for the purpose of preparing and serving flavored soda water or an ice cream soda. This was made by putting flavored syrup into a specially designed tall glass, adding carbonated water and, finally, one or two scoops of ice cream.
View full size image. A hypnagogic jerk is an involuntary muscle spasm that occurs as a person is drifting off to sleep. The phenomenon is so named in reference to the hypnogogic state â the transitional period between wakefulness and sleep. Hypnagogic jerks are also commonly known as hypnic jerks or sleep starts. The muscle spasms may occur spontaneously or may be induced by sound, light or other external stimuli.