tˈɪklɪŋ ðə dɹˈæɡənz tˈeɪl, ɐ nˈaɪntiːnhˈʌndɹɪd fˈoːɹɾi sˈɪks fˈeɪld ɛkspˈɛɹɪmənt tə tˈɛst ðɪ ɛɡzˈækt pˈɔɪnt æt wˌɪtʃ fˈɪsaɪl mətˈɪɹiəl kʊd biː mˌeɪd kɹˈɪɾɪkəl, ˈæftɚ wˌɪtʃ hˈændzˌɔn kɹˈɪɾɪkˈælᵻɾi ɛkspˈɛɹɪmənts wɜː dɪskəntˈɪnjuːd ɪnðə juːnˈaɪɾᵻd stˈeɪts
Tickling the Dragon's Tail, a 1946 failed experiment to test the exact point at which fissile material could be made critical, after which hands-on criticality experiments were discontinued in the United States