Squid is also a derogatory term referring to a motorcyclist, typically on a sportbike, that rides with minimum of safety gear, no rider training and poor skill while attempting to ride faster than their ability allows. The term is derived from the 1960's when Navy Sailors would dock in San Diego, they would purchase two-stroke motorcycles (which typically spew black smoke) and ride them around, with a minimum of safety gear while drunk.
"Squid" is also the nickname for one of the characters on the "Rocket Power" cartoon show.
"Squid" is also New England undergraduate slang for "study". It appears to have originated in the early 1970s, and originally came from the fact that squids squirt ink.
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