TKO

Turbo, Kelly, and Ozone. From the 1984 film "Brakin'" also released as "Breakdance" in europe!

None. But worth remembering if you wanna claim to be old skool.

Slapper

another meaning:
Used in motocross and maybe other motocycle sports.
When the rider gets a rough ride from the bike, in a kinda out of control stylee. From the term "tank slapper" as in getting slapped up a bit by the fuel tank.

man did you see that!? i got a right slapper on that last straight!