A woman who is beginning her period without wearing
a pad or tampon and leaves some red on her panties. Can also be used for a man: the act of pushing out a fart and
drawing mud, leaving a small stain on your drawers. Similar to
touching cloth, or skid marks.
Layne was
priming his bowels for a huge dump when he
ripped ass and inadvertently started spotting.
"I better get to the head, I think I'm spotting!"