To intercept a high-five offering not intended for you. After or during the act of sniping, the phrase "Sniped!" should be said by the sniper. Several variations are detailed below.
Full Snipe: Both sides of the high-five are sniped, one after the other, by the same hand.
Cross Snipe: Both sides of the high-five are sniped simultaneously by one sniper, left side by the right hand and right side by the left hand.
Push Snipe: Both sides of the high-five are sniped simultaneously by one sniper, left side by the left hand and right side by the right hand.
Double Snipe: A cross snipe followed by a push snipe or a push snipe followed by a cross snipe.
Defense Snipe: A participant of the high-five snipes an approaching snipe with his idle hand.
Trick Snipe: A snipe performed by a participant of the high-five, by sniping the high-five partner with the left hand when the right hand is expected, or with the right hand when the left hand is expected.
Self Snipe: One participant of the high-five high-fives his own high-fiving hand with the idle hand, leaving the partner hanging.
Triple Snipe: Three participants in a circle, about to perform three simultaneous high-fives, all decide to snipe the high-five which they are not included in. If all participants choose to snipe with the same hand, the three pairs of participants will all high-five as planned.
Epic Snipe: A combination of three or more of the above-detailed snipes in quick succession.
An example Epic Snipe:
Person A and Person B lift their right hands in preparation for a high five. Person C goes for a Push Snipe, left hand to Person A and right hand to Person B. Before this snipe comes to fruition, Person A defense snipes Person B's left hand with his own left hand, and performs a quick full snipe on Person B and Person C's imminent high-five with his now idle right hand. Person B hangs his head in shame.