Something that tastes good or feels good to a gangsta. Believed to be derived from the words "yummy" and "gangsta" or "gangster." (American Slang).
That B Donka Donk was "yumsta" in those leather pants.
by Greg Ger June 28, 2006
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Of or related to being yummy or delicious but only in the ultra-cool crowd.
Dang! That booty be yumsta.
by petepan January 1, 2008
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