It cuts off the blood supply so it'll fall off, can't believe Doctor's actually tell people to do that though on their own.
I can. Even an overworked doctor has to think, "This is something that this guy can take care of himself." Skin tags reoccur, and it's wasteful to run to the doc every time you have one.
As for me, I get them here and there and I just snip 'em off. They bleed for awhile, but it stops.
Of course, if a skin tag is pretty damn big, it's gonna bleed longer. At that point, it's time for a tourniquet.