A combination of sweat and a female body part, normally consisting of moisture around the pelvic region. Swat normally stems from lack of hygiene in the vaginal area coupled with a long day of hard work.
It's used in the USAF by fliers and maintenance
people to describe those that have to clean the shitters, swap out the water jugs and remove the garbage.
Hey when is the SWAT teamgonna get here and clean out the latrine?