What do you call extra skin on the edge of your butt hole?

Answer 1

Skin tags are a small flap of skin that grows above the level of surrounding skin, often as a tiny fingertip shape. Skin tags can appear anywhere on the body, but mostly on the trunk (chest, belly). Any skin tag can be removed, including from the eyelids.

Answer 2

These are called anal skin tags. They are harmless and common. You can have them removed if they really bother you.