Warning: The following answer contains explicit content that may be offensive or inappropriate for some readers.

Feltching is a sexual act that involves the licking or sucking of semen from a partners anus or vagina after ejaculation. The term is considered slang and is not commonly used in polite conversation. There are different variations of the act, and some involve the use of an auxiliary device, such as a straw, to retrieve the semen from the partners anal cavity.

It is important to note that feltching is not always safe and can increase the risk of sexually transmitted infections (STIs) and other health issues. It is recommended to use protection and practice safe sex to reduce the risk of STIs and other health problems.

It is also worth noting that there are some variations of the term feltching that involve other sexual practices, such as the use of gerbils for anal sex. However, these variations are not widely recognized and are not related to the sexual act of licking or sucking semen from a partners anus or vagina.