Definition: Okay, here's a short, silly rhyme incorporating “welcher” (which, as you noted, doesn't have a readily available definition – adding to the absurdity!)
Definition not found. It’s quite bizarre,
Like a badger wearing a miniature star!
I tried to teach my goldfish how to spar,
With a tiny pickle - a welcher affair!
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Would you like me to try another one?
Would you like me to try another one?