To steal an object from someone and they don't notice, just like when snipers do when they shootpeople, they kill them without them noticing obviously lol.
to catch someone in the act of "checking out" someone. to effectively snipe, one must know that he/she is being watched, and then execute the Blue steel.
1st guy "man i saw sum girl checkin me out so i sniped her"
2nd guy "owned"
To call upon another in a large crowd and in a different voice than normal. As to embarrass that person because they look incredibly stupid trying to find who called their name.
Jimmy: (in unusual tone) Hey Johnny!
Johnny: What the??? Who Sniped me?
The act of waiting until your mate's put in all the ground work chatting up some kive, jumping in the second his back's turned, pulling her and then taking her home to show her your beefy treat.
If you dare snipe this kive I'm talking to I'll ram that bottle of blue muck so far up your arse you'll be shitting green for a month.