Xylocaine (topical) is a brand name that contains a medicine called lignocaine. It is a local anaesthetic and is used in minor surgical interventions. It is sometimes misused under the misconceived notion that it can help in delaying the so-called premature ejaculation (early orgasmic response) in men by de-sensitising penis skin. There is no evidence in support of such a use. Besides it can cause adverse reactions in the female partner.