Always found this to be a good definition of a Squid- Squid (Squiddy) - Acronym, SQUirrely kID. 1. In reference to younger MC riders with little respect to posted speed limit laws, self safety or safety of others. 2. Inexperienced newcomer, someone trying to ride beyond his skill level with arms flailing (like a squid) to try not to fall. This may be just a Southern term. 3. Stupidly Quick, Underdressed, Imminently Dead. 4 Any Sportbike Rider - seems this term got twisted along the way and has many meanings. 5 Sportbike riders who wear tennis shoes or flip flops, shorts, T-shirts, etc. on their nice shiny new sport bikes. 6 Anyone that rides without all proper gear , rides recklessly, or rides beyond their limits. 7. Someone who rides a sportbike on the street as if he or she were on a racetrack. http://www.totalmotorcycle.com/dictionary/motorcycle-dictionary-index.htm