 tongues out when we concentrate. A lot of brain power is used to control our tongues, they say, and subconsciously biting it or sticking it out helps divert that brain energy to other tasks. Hmm, did not know that. National Flitch Day, celebrating the old English tradition of having a married couple kneel on pointy rocks and stare at each other to prove they don't regret being married. If the town's folks believed them, they'd get a side or flitch of bacon.