The Nature Guide

compass

An erect nature guide from Danforth
Sported wood that would always point north;
So, when clients lost their way,
He’d say, “Lads, it’s okay;
“My stiff pecker will lead us henceforth.”

See also this limerick’s Erections companion pieces:

From time to time, the Earth’s magnetic poles flip. According to ExtremeTech, the last time this happened was 786,000 years ago in an event called the Matuyama-Brunhes magnetic reversal, which occurred over a 100-year period. Scientists think the movement of quintillions of tons of molten iron in our planet’s outer core is responsible for these geomagnetic switches. Some say it could even happen in our lifetime. Thank goodness for GPS, then!

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