I have this problem with my shower head, what I do to fix it is turn on the sink in my bathroom to hot, this usually shuts it up
Either replace the washer on the hot side in the faucet (or buy a new washerless faucet), replace the "angle-stop" with a "quarter-turn" style, or install a "water hammer arrestor". (There is a real convenient style on the market, it fits between the incoming nut at the angle stop and the thread on the body of the stop itself).
Often a faucet will sputter if there is air in the lines. This happens if the water has been turned off and then on again. If this is the cause, it is only necessary to run the water a while and the air will get out of the lines, and the sputtering will stop.
replace or tighten the seals in the faucet.
If you stop yourself from breathing whilst whistling, then yes it can kill you.
Someone may have shut off the water to that faucet, or a pipe may have froze, or there may be air in the pipe.
its not the co.pper line its the faucet stem or angle stop
you cant
It won't stop suddenly, but will reduce the flow so you get less and less water.
Most likely, air in the line.
You take the faucet apart and replace the washer and stem seal .
I have seen this type of thing happen when there is a bit of junk in a line that falls back when the flow has stopped, and then move back with the flow to stop it when it gets to a point where the water is restricted. More often, I have seen it to be just something odd about the faucet making it creep off from the flow of the water going through it.
There are many faucets that do this. There is water between the end of the faucet and the valve. You turn it off, and the water comes out of that area. Unfortunately, there's not much you can do about it.