Then why was he bashed on the head a few minutes later with a candlestick if he was dead already?

3 seconds sound clip from the Clue (1985) movie soundboard.

You can hear this line at 01:10:20.725 in the Blu-ray version of the movie.

Quote context

[...]

- And Mr. Boddy went to get the surprise packages from the hall. And you all opened your presents.

- Mr. Boddy switched off the lights.

(all screaming)

- Oh! Grand.

- Mr. Boddy lay on the floor apparently dead.

- He was dead! I examined him.

- Then why was he bashed on the head a few minutes later with a candlestick if he was dead already?

- All right, I made a mistake.

- Right, but if so, why was Mr. Boddy pretending to be dead?

- It could only be 'cause he realized his scheme had misfired, and the gunshot was intended to kill him, not me.

- Look. The bullet grazed his ear.

[...]