A fork of Rural Dictionary
when two small children, who are so small and young that they can be also classified as 'fetuses', participate in pre-pubic sex. This could be any small child who has not hit puberty yet.
"I heard Nancy lets her kids fetus link in the basement." -nancy's neighbor Charlie: "Mom, can I spend the night at carly's house?" Mom: "as long as you don't fetus link!"
To link the fire is to have sex with someone with an STD wether you have it or they have it or both.
Damn my girlfriend wanted us to link the fire and I was like no way I don't want Gonorrhea.