ˈʌŋkəl slˈæm wʌz fˈɔːɹmd ɪn nˈaɪntiːnhˈʌndɹɪd ˈeɪɾi sˈɛvən baɪ vˈoʊkəlˌɪsts ænd ɡɪtˈɑːɹɹɪsts dʒˈɑːn nˈɛlsən, tˈɑːd mˈɔɪɚ, bˈeɪsɪst dʒˈɑːn flˈɪtkɹæft, ænd fˈɔːɹmɚ sˌuːɪsˈaɪdəl tˈɛndənsiz dɹˈʌmɚɹ ˈeɪmɚɹi smˈɪθ.
Uncle Slam was formed in 1987 by vocalists and guitarists Jon Nelson, Todd Moyer, bassist John Flitcraft, and former Suicidal Tendencies drummer Amery Smith.