jit·ter·bug 
(jĭtər-bŭg′)
(jĭtər-bŭg′)n.
1. A strenuous dance performed to quick-tempo swing or jazz music and consisting of various two-step patterns embellished with twirls and sometimes acrobatic maneuvers.
2. One who performs this dance.
intr.v. jit·ter·bugged, jit·ter·bug·ging, jit·ter·bugs
To perform this dance.
[From jitterbug, heavy drinker who suffers from the jitters, from JITTER.]