Meaning of "over board"

[Rynda]

English Language Tests, Intermediate level

ESL/EFL Test #737 "Boat/Sailing Common Phrases (1)", question 5

David really went over ......... yesterday. He started yelling because I dropped a cup and broke it. He went crazy about it and punched a hole in the wall.

(a) board
(b) come
(c) sight
(d) ship

English Language Tests, Intermediate level

ESL/EFL Test #737 "Boat/Sailing Common Phrases (1)", answer 5

David really went over board yesterday. He started yelling because I dropped a cup and broke it. He went crazy about it and punched a hole in the wall.

Correct answer: (a) board

Your answer was: correct
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I understand from the text that over board means furious. Am I write?

Rynda

[Mister Micawber]

No, not necessarily right. 'Go overboard' (one word, actually) means 'act too much, extremely, more than required or expected'.
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Native English teacher at Mister Micawber's