to thrust your hips in a way that your boys slap against each other and other parts of your body loud enough to make a noise.
coined my matt ritchie
Andrew, i was doin the slap attack today in umbro's and these hot girls saw me! Aww it was priceless
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An attack featuring someone being beat up in a video, often 2 against 1.
As he came out of the club he was slap attacked