On the Rat is a more glorified example of On the
Rag except in this
case the test subject is not wearing a pad, or rag for the
case, no, instead a tampon. The Rat comes into it because the string looks like a cute rodent tail hanging out.
Henry- "
Man she
dropped them jeans and I couldn't believe it. Her tampon fell out too!
Steve- "No way! She was On the Rat"?
Henry- "Yeah. Still did her though"