勤きん続ぞく疲ひ労ろう
Meanings
Noun
Humorous
1. worsened performance because of long service; malfunctioning resulting from continuous long-term operation
pun on 金属疲労
Kanji used
devotion to work
continue
tired
labor
Pitch accent
⚠
き
んぞくひ
ろう
Composed of
continuous service
fatigue; weariness; exhaustion; fatigue (of metal, etc.)