He was laughed by me. vs He was laughed at by me.

Some examples from the web:

• He was laughed at when he claimed there was a world down below.
• I was laughed out of 12 interviews.
• I was laughed at by the people in this newsroom.
• I was laughed out of 12 interviews.
• If a man goes to carry water, he will be laughed by other villagers.
• Nicola touched it from time to time and he then laughed by himself.
• "He was a fine fellow!" shouted Garden-Ole, and he and his wife laughed as they hadn't laughed for years.
• Everybody laughed when he was telling his symptoms.
• He was embarrassed that all his friends laughed at him.
• He was ill-tempered, she laughed.
• As early as 2004, it was laughed out of the room by Germany and France.
• "Terrorism" is a word which was laughed off the scene of serious studies at least two decades ago, even in reference to cases of physical violence against innocent passers by.
• This blunder Rebsamen was laughed all lawyers into the columns of the Figaro!
• The tablet form-factor was laughed at when Steve Jobs first introduced it. Tens of millions in iPad sales later, and the naysayers are eating crow (not to mention trying to make successful tablets of their own).
• Whenever I laughed he was worried people would notice us.
• He was euphoric, he laughed, nervously, like someone about to discover something incredible who can't contain his joy.
• Sick as he was, he always laughed a lot when they were together.
• He said that Gary called up the network and they laughed at him 'cause he was drunk.
• He was really good and likeable, a humble man, who kept himself hidden... But also affable, we laughed a lot together.
• He was sleeping, but I Walked down the road and people laughed at me.

Some examples from the web:

• He was laughed at when he claimed there was a world down below.
• I was laughed at by the people in this newsroom.
• He was embarrassed that all his friends laughed at him.
• The tablet form-factor was laughed at when Steve Jobs first introduced it. Tens of millions in iPad sales later, and the naysayers are eating crow (not to mention trying to make successful tablets of their own).
• He said that Gary called up the network and they laughed at him 'cause he was drunk.
• He was sleeping, but I Walked down the road and people laughed at me.
• Disabilities are not things to be laughed at or laughed about.
• There must be millions of planets in the Milky Way, and as Carl Sagan insisted for many years, and was laughed at for it, there must be billions and billions in the universe.
• If it hadn't been for Hugh you would have laughed at Adderley - a worthless rake who used a pistol because duelling was his only form of revenge on men more successful with women than he was.
• He was absolutely thrilled that somebody laughed at it.
• They laughed at Peter, they laughed at all of us.
• They laughed at Jules Verne, too.
• I think that guy just laughed at me.
• The other reindeer laughed at him.
• They laughed at the Bracken story.
• She laughed at me because I don't smoke yet.
• When they danced together, they laughed at her.
• I'm sorry we laughed at Nan.
• I shall not stay to be laughed at.
• I've been laughed at before, man.