Chain-shot is an obsolete type of naval ammunition formed of two sub-calibre balls, chained together.
by KeeganB11 October 13, 2008
When one gentleman stretches his scrotum in a fashion similar to a bat wing or flying squirrel, but simultaneously places his testicles into the mouths of two separate partners.
"Yo Matt and Luke, I totally pulled a chain shot when I put my balls in Eric and Fed's mouths at once"
by Senor Panama October 26, 2013