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