It's an effect you have when thizzing you might be smacking on some gum or candy after you pop a xtc pill
by TashaBaby May 11, 2008
by thihzz iz wat it iz April 23, 2006
by Hshsbbdbd March 29, 2017
To be really good (relating to food).
by Nellie November 11, 2003
by Victoria916 September 10, 2006
that party was smackin the other night!
by ecrizzel April 06, 2009
by Smittytricks December 28, 2010