Fat Penguins means: Fat Penguins is an English phrase that’s commonly used in Grimsby, England. This phrase can be used to fill in the gaps between sentences, or as conversation starters. Sometimes, the audience follows the speaker in an attempt to find the Fat Penguins. It is usually met with positive reactions, but if it’s used too often the phrase can lose its novelty. Be careful. (in Community Dictionary, added by Damián López)