Ingestion of semen in humans
Ingestion of semen (semen ingestion or spermatophagy) is the act of orally consuming semen, most commonly occurring in sexual contexts but also documented in certain cultural, ritual, and historical settings. The practice has been described across a range of societies and belief systems, where it may carry symbolic, social, or erotic significance.
Source: Wikipedia — Ingestion of semen in humans (CC BY-SA 4.0)