Hmm...I thought that slicing someone's throat makes noise and the person flops around like a dead fish. I guess the only way to be sure is through experimentation.
They won't die in three seconds like in the movies. You have to make a quick, decisive cut, then hold them around their head/neck area firmly until they bleed out.
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See what other swarmers have to say about it. People love this place, so I feel fine about sending you there and am confident you will enjoy boners.