An "Eskimo Bum Chum" is an act where two cold Eskimo's would kneel on all fours with their anuses parallel to each other. They then pass a log of feces back in forth through their anal cavities, creating friction and warmth to protect them from the harsh cold elements. It is also a wonderful bonding experience.
"It got cold last night and the heater broke, so me and Smith did the Eskimo Bum Chum to stay warm."
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