Hydronic mushies

Hydronic mushies, or more commonly known as mushies, is a nutrious foodstuff that is multi-colored and typically cube-shaped.

Mushies were instrumental in saving the lives of numerous crew members, including Boomer, Athena and Boxey, who were stranded in the Galactica's rejuvenation center after a suicidal Cylon attack crippled the ship. Muffit, who had just recently been trained by Boxey to "sniff" out mushies, was employed to negotiate the convoluted maze of ventilation ducts, delivering lifemasks to the crew and rescuing a fallen firefighter from the flames. (Fire in Space)

Original Series definition: a food (see: mushies)

Re-imagined Series definition: equivalent of "square," a socially awkward person ^{(CAP: "The Imperfections of Memory")}