What is fingering?

Ok I just wanted to ask how does a boy finger you and what does it feel like?

well a boy fingers you by getting one or more fingers what ever you are comfortable with and moves his fingers up and down in your vagina for pleasure. make sure he washes his hands before and I have no clue if it feels good or not I haven't tried but I heard it felt good.
but good luck. I hope this helped

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Clean fingers are important, short nails are also that. Putting up and down in you is possible only if you are not virgin. Till that fingering is just touching and stroking your private from outside. If you are mature for that it is a good feeling. It depends on your stete of hormonal, somatic etc. development.