Common slang in western militaries for tissue paper or any paper used to wipe a nose. Reflects the fact that tissue paper in the military was often just really crappy quality toliet paper.
"Wow its called outside, hand me some snot rag!"
Person 1 blows nose and throws tissue away
Person 2: Who left all the snot rags in the trash can?
a rag or towel used to wipe the cum off your partner or youself after sex,
Don't touch that tara! That's daddy's snot rag.
the rag you use when wiping your semen
"Why don't you ever wear those socks?"
"It's my snot-rag"
when you blow your nose on someone pussy?
Mr web did a snot rag on a little girl