An unflattering penis photo (i.e. limp, shrunken, shriveled, hairy) sent to a girl you just met to basically state that you don't give half a shit if you have sex with them or not but are open to it. Women respond surprizingly well or not at all. Invented by a college student in Hilo, Hawaii in 2011.
Charlette gave her number to Josh, a guy she just met at a party. She soon received a cell phone picture message, from Josh, of a limp dick and titled "COBRA STRIKE".