At the start of this cruel, yet insanely amusing, video, the creator points out that he's "not an asshole, just playfully antagonistic" which makes us feel a lot less guilty for laughing all the way through it.
Jonathan, an employee at a US store called Trader Joe's, spent a year cataloging every single time he made his co-worker Evelyn scream.
To be fair to Jonathan, Evelyn appears to be the most easily scared person ever. Plus her scream is fantastic.
Oh and if you still feel guilty, she totally laughs at the end...