Is kissing and licking private parts Halal or Haram?
Praise be to Allah, the Lord of the Worlds; and may His blessings and peace be upon our Prophet Muhammad and upon all his Family and Companions.
Islam permits to both husband and wife to enjoy one another within the limits of Sharia. They should avoid anal sex and sex during the woman's menstruation period. Apart from that, the matter is unlimited.
However, one should not go beyond Islamic ethics and morals. No doubt that what is mentioned in the question does not fit the good character and the noble ethics. So, it is preferable that one avoids it although there is no evidence prohibiting it. But if the impurity gets mixed with saliva and one swallows it, then this becomes unlawful.
Allah knows best.
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