Refers to having sex with a girl on her period.
The
definition refers to the cold war fought against the Communists who commonly used red as their primary
color.
Similar in
meaning to "Getting your redwings"
Male version:
Joe: "Hey Tim, what happened last night after you left with
Mary?"
Tim: "Oh man, it was nuts I ended up fighting in the Cold War."
Female version:
"Jill, have you ever let anyone fight in your cold war?"