Often associated with a sweaty female genetalia. This term is derived from the slang term for the vagina: 'pink taco', or simply 'taco'. Swaco generally occurs in humid conditions or during and after exercise. Upon the outset of a swaco episode females have described the feeling as having "sweaty meat sheets"...
"That broads swaco is soaking through her shorts"
by Jake Jenn November 06, 2006