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Robin Williams improvised the last line in Good Will Hunting as well as the scene where he talks about his wife farting in bed. That’s why Matt Damon was laughing so hard. – original

Robin Williams improvised the last line in Good Will Hunting as well as the scene where he talks about his wife farting in bed. That's why Matt Damon was laughing so hard.

Robin Williams improvised the last line in Good Will Hunting as well as the scene where he talks about his wife farting in bed. That's why Matt Damon was laughing so hard. – incredible