Gonzo L.A. rappers Odd Future made their network television debut count, as the buzzworthy group busted out an unforgettably unhinged performance on "Late Night with Jimmy Fallon" last night (Feb. 16).

Performing the self-released track "Sandwitches," Tyler, the Creator and Hodgy Beats spit vicious rhymes with facemasks on while a creepy girl in a hospital gown lingers in the background. The rappers rip off their masks and thrash around to the song's chorus, and performance ends with Tyler running around Fallon's desk before jumping on the host's back as he signs off.

The rousing performance may have been the first mainstream look for Odd Future (aka Odd Future Wolf Gang Kill Them All, or OFWGKTA), but it's unlikely to be their last. Group leader Tyler, the Creator's next album, "Goblin," is expected to be released in April on XL Recordings.