To be suplexed backwards onto ones head. Refers to the technique Kevin Randleman used against Fedor Emelianenko in a Pride FC event titled "Critical Countdown 2004." Fedor, however, manged to recover from the powerful takedown and, to the shock of many, win the fight in under two minutes.
Fight fan 1: "According to UFC rules, you cannot drop/spike your opponent directly on his head"
Fight fan 2: "I guess that rules out the chances of seeing any randleplexes"