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The Jitterbug is a kind of dance popularized in the United States in the early twentieth century and is associated with various types of swing dances such as the Lindy Hop, Jive, and East Coast Swing.
The term jitterbug comes from an early 20th-century slang for alcoholics who suffered from the "jitters" (i.e., delirium tremens). The term became associated with swing dancers who danced without any control or knowledge of the dance. In popular culture, it became generalized to mean swing dancers themselves, or a type of swing dance – for example "they danced the jitterbug", or the act of swing dancing – "People were top-notch jitterbugging, jumping around, cutting loose and going crazy".
Cab Calloway's 1934 recording of "Call of the Jitter Bug" (Jitterbug)  and the film "Cab Calloway's Jitterbug Party" popularized use of the word "jitterbug" and created a strong association between Calloway and jitterbug. Lyrics to “Call of the Jitter Bug” clearly demonstrate the association between the word jitterbug and the consumption of alcohol:
In the 1947 film Hi De Ho, Calloway includes the following lines in his song "Minnie the Moocher": "Woe there ain't no more Smokey Joe/ She's fluffed off his hi-de-ho/ She's a solid jitterbug/ And she starts to cut a rug/ Oh Minnie's a hep cat now." 
Regarding the Savoy Ballroom, dance critic John Martin of The New York Times wrote the following:
Norma Miller wrote, however, that when "tourists" came to the Savoy, they saw a rehearsed and choreographed dance, which they mistakenly thought was a regular group of dancers simply enjoying social dancing.
A young, white middle-class man from suburban Pittsburgh, Pennsylvania learned to dance jitterbug in 1939 by going to the "Hill City" section of that city to watch black dancers. They danced smoothly, without hopping and bouncing around the dance floor. "The hardest thing to learn is the pelvic motion. I suppose I always felt these motions are somehow obscene. You have to sway, forwards and backwards, with a controlled hip movement, while your shoulders stay level and your feet glide along the floor. Your right hand is held low on the girl's back, and your left hand down at your side, enclosing her hand."
When he ventured out into "nearby mill towns, picking up partners on location," he found that there were white girls who were "mill-town...lower class" and could dance and move "in the authentic, flowing style". "They were poor and less educated than my high-school friends, but they could really dance. In fact, at that time it seemed that the lower class a girl was, the better dancer she was, too."
A number called "The Jitterbug" was written for the 1939 film The Wizard of Oz. The "jitterbug" was a bug sent by the Wicked Witch of the West to waylay the heroes by forcing them to do a jitterbug-style dance. Although the sequence was not included in the final version of the film, the Witch is later heard to tell the flying monkey leader, "I've sent a little insect on ahead to take the fight out of them." The song as sung by Judy Garland as Dorothy and some of the establishing dialogue survived from the soundtrack as the B-side of the disc release of Over the Rainbow.
In 1944, with the United States' continuing involvement in World War II, a 30% federal excise tax was levied against "dancing" night clubs. Although the tax was later reduced to 20%, "No Dancing Allowed" signs went up all over the country. Jazz drummer Max Roach argued that, "This tax is the real story why dancing ... public dancing per se ... were [sic] just out. Club owners, promoters, couldn't afford to pay the city tax, state tax, government tax.
World War II facilitated the spread of jitterbug across the Pacific and the Atlantic Oceans. British Samoans were doing a "Seabee version" of the jitterbug by January 1944. Across the Atlantic in preparation for D-Day, there were nearly 2 million American troops stationed throughout Britain in May 1944. Ballrooms that had been closed because of lack of business opened their doors. Working class girls who had never danced before made up a large part of the attendees, along with American soldiers and sailors. By November 1945 after the departure of the American troops following D-Day, English couples were being warned not to continue doing energetic "rude American dancing." Time Magazine reported that American troops stationed in France in 1945 jitterbugged , and by 1946, jitterbug had become a craze in England.  It was already a competition dance in Australia.
In 1957, the Philadelphia-based television show American Bandstand was picked up by the American Broadcasting Company and shown across the United States. American Bandstand featured currently popular songs, live appearances by musicians, and dancing in the studio. At this time, the most popular fast dance was jitterbug, which was described as "a frenetic leftover of the swing era ballroom days that was only slightly less acrobatic than Lindy."
In a 1962 article in the Memphis Commercial Appeal, Bassist Bill Black, who had backed Elvis Presley from 1954 to 1957, and now the leader of the Bill Black Combo listed "jitterbug" along with the twist and cha-cha as "the only dance numbers you can play."