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Jyutping sau3 dau6
Pinyin xiù dou

Definitions (Wiktionary)
  1. verb, colloquial, figuratively, humorous
    to have a mental lapse; to be addled
  2. verb, Taiwan, colloquial
    to short-circuit

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Jyutping sau3 dau6
Pinyin xiù dòu

Definitions (CC-CEDICT)
  1. to short-circuit
  2. (fig.) to have a mental lapse
  3. to get one's wires crossed
  4. to be addled
Definitions (Wiktionary)
  1. verb, colloquial, figuratively, humorous
    to have a mental lapse; to be addled
  2. verb, Taiwan, colloquial
    to short-circuit