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1.
A small, highly buoyant, bit of poo that remains in the bowl following a flush and steadfastly refuses to disappear. Plunging and targeted tissue draping are ineffective.

Self-generated chegwinnits mainly occur the first time you visit your new boyfriend/girlfriend's parent's house.

Stranger's chegwinnits are regularly found in public conveniences.

Often shortened to 'cheg'.
I couldn't believe it. I was lunching with Kate and Wills when I needed a crap, and a fucking chegwinnit refused to flush! I scooped it out and fed the fucker to a corgi
by Violet Toad May 27, 2011