I was told 225 ug per drop . There ' s a little more than 25 drops . I paid $ 100 . <| sep |> Not sure if serious . <| sep |> Living Legend for appearance , Sushi for collection . <| sep |> FUCK he had it <| sep |> A few months ago my friend left his notebook at uni , so naturally I decided to mess with him . I chose to write a random word about 20 pages further into his book than he was . That word was flake . The plan was to use the word in everyday conversation so much that it annoys him to the point where he thinks he is going crazy and then one day , BAM ! He turns the page and sees FLAKE written in his notebook and has a mental breakdown in the middle of a lecture . You know , harmless banter between friends . I got our whole friend group in on it and by the end of the week he had asked people about the flake thing . Obviously we denied noticing anything . This went on for a bit until my friend decided to eat a flake chocolate bar in front of him . She couldn ' t look at him because she kept bursting out laughing . When she finished , she put the wrapper face up in his line of sight . He leaned across the table and said I think I ' m going crazy because I keep noticing the word flake . He somehow didn ' t entirely think we were behind it , he thought it was coincidence . Fast forward a few weeks , another friend got impatient and wanted to see the reaction so he told him about it . He said that if he hadn ' t been told that he would ' ve had a freak out in a lecture ! I ' m still counting it as a success