Srsly,
The Karate Kid was not that great of a movie. It was the loser/good movie of the 80's. It's not even geek-chic like the holy Star Wars Trilogy, Back to the Future, or Indiana Jones. And the sequels should have been released straight to Beta.
And... if you're gonna steal a meme from that movie, you are supposed to take "Wax on, Wax off!"
I've been deluged with Karate Kid pop culture references recently, and I've heard "Sweep the Leg" way too many times. I can't cite all of them, but I was watching an episode of Chuck last night and it had the odious reference in there.
Pop culture, stop it! You're not cool, and neither is that movie. Very few people remember that line so you're talking to a small club... and we have excommunicated that movie from meme-able references.
Return back to your regularly scheduled programming of Yoda quotes and flux capacitor references.
That is all.