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1.
to strike a man's genitalia on another person's body, usually their face. Used with a mock latin accent, and generally no adjectives. Not unlike a turkey slap
Steve slapa Pete

Pete slapas Steve and Gabe face

Gabe slapa my face
by NewOrderrr July 12, 2009
 
2.
Acronym for "Sex Lacking Awesome People Association"
An organization for people that don't get enough sex.
I joined SLAPA 'cos I wasn't getting enough poontang!
by Alan Epton March 21, 2007