India, March 3 -- Kieran Culkin dropped the F-bomb on the Oscars stage and added that his wife owes him a fourth kid after he won Best Supporting Actor.

The night's first award, presented by Robert Downey Jr., went to Kieran Culkin for best supporting actor. Culkin has cruised through the season, picking up award after award, for his performance alongside Jesse Eisenberg in "A Real Pain."

"I have no idea how I got here," said Culkin, "I've just been acting my whole life."

Culkin spent most of his speech recalling an earlier, hypothetical promise from his wife Jazz Charton, that they could have a fourth child if he won an Oscar. Culkin used the opportunity to take Charton - "love of my life, ye of little faith" - up on the offer.

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