Who is a mother? That is one of those questions that must be approached with much nuance. Suppose a teenager gets pregnant and gives up her baby that Michael Cera fathered through a closed adoption. Would that teen be considered a mother, even though the role and responsibility of motherhood have been transferred wholly to Jennifer Gardner, who is now divorced from Jason Bateman? Some would say that Juno was a mother because she gave birth, but that sparks an interesting question: can someone be a mother if they never gave birth in the first place?

A story recently went viral on Reddit that grapples with that complex question. A woman got into an argument with her sister because said sister didn’t get anything from her family for Mother’s Day. The woman claims that since her sister only had a false positive pregnancy test (or a chemical pregnancy), she can’t claim to be a mother.