When news broke that the greatest of comedians, Robin Williams, had died on August 11, famous and ordinary folk alike swarmed to social media so they could express their feelings about the loss they felt.

Canadian comedian Norm Macdonald took to his Twitter account to share the most hilarious and heartbreaking story of his run-in with Williams, who he calls “the funniest man on earth.” The following 20 tweets sum up Williams perfectly, and are probably the greatest Robin Williams tribute to date:

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What do you think about Macdonald’s touching tribute? Let us know in the comment section below.