How to do it: This is achieved by having a reasonable distance between you and the target, enough for you to successfully plant your foot on the targets' chest. It is best to do this in rebuttal to a persons statement, while screaming your point at them.
Me: All Time Low? THAT'S! FOR! FAGGOTS! and then you Sparta Kick them. Preferably into a hole.
2. Kicking someone in the chest.
Both derived from the famed scene in 300
Person A: Aww, I see you're playing a xylophone.
Person B: THIS IS MARIMBAAAAAAA!!!!!!!!!!
Dude did you see that UFC fight? That guy just totally got sparta kicked.
Bob: This is Sparta!!
Bob: Thats my fifth Sparta Kick today.
Gannondorf can perform this action in Super Smash Bros. Brawl for the Nintendo Wii system by pressing forward and A with the Gamecube controller or forward and 2 with the wii remote held sideways.
"Ima Sparta Kick someone"