French kiss, also known as a deep kiss, refers to an amorous kiss in which the participants' tongues extend to touch the other participant's lips or tongue. The implication is of a slow, passionate kiss which is considered intimate, romantic, erotic or sexual.A "kiss with the tongue" stimulates the partner's lips, tongue and mouth, which are sensitive to the touch. The practice is usually considered a source of pleasure. The oral zone is one of the principal erogenous zones of the body.

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