Kamikaze Karaoke
Similar to regular karaoke, but in this version each participant takes to the microphone without any foreknowledge as to what song they will be performing and must complete said song whether they know it or not. Best results are achieved on at-home karaoke machines where discs can be inserted and played completely at random.
Really, kamikaze karaoke!?! I got stuck singing fucking Wham again? Really!?!