To interfere with someone who is getting familiar with, conversing with, or hooking up with a member of the opposite sex. Similar to that of a cock block.
Scott was about to hook up with Beca, but Sammie went and rooster fenced him.
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."