Diarrh(o)ea
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DIARRH(O)EA

 Mnemonic:
Dashing In A Rush, Running Harder (or) Else Accident!

 Mnemonic:
Dining In A Rough Restaurant: Hurry, (otherwise)Expect Accidents!

 Mnemonic:
Diarrhea Is A Really Runny Heap (of) Endless Amounts