Elvis Presley had a heyday in the 60's and the 70's.
by Kay Jay123 October 14, 2005
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A noticeably out of date hairstyle, usually attributed to those in their middle age, reflecting one's heady youth.
Wow, did you see that guy with the Chachi hairdo? Nice heyday-hair dude.
by Diamond, C.S. July 11, 2008
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