A mark often left on the front of a pair of underwear, usually the result of leftover male ejaculate.
After a pleasurable night of adultery with my wife's sister, the only evidence that got me busted was a couple of overlooked squid marks on my boxers, and her dress.
by Briggsyl March 30, 2008
Get the SQUID MARKmug. by Fatty Bearsteak September 10, 2019
Get the Squid Marksmug.