Top Definition
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!"
by Mark Tang June 12, 2008
5 Words related to fetus link

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