cob
The cardboard tube at the center of the toilet paper roll. The word is possibly derived from the folk custom of wiping one's ass on corn husks or corn cobs, though it is uncommon to perform this operation with a cardboard cob.
My kid needed cardboard tubes for her school craft project, so we used the cobs from our toilet paper rolls.
cob by Mr. Weebitzy December 7, 2013
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